Welcome to the ultimate guide for creating a mouthwatering **Slow Cooker Rosemary Garlic Tri Tip French Dip sandwich** – a recipe that promises minimal effort for maximum flavor! Imagine tender, shredded beef infused with aromatic rosemary and savory garlic, slow-cooked to perfection, then nestled between slices of crispy focaccia bread. Add a layer of creamy horseradish and melted cheese, all ready to be dipped into a rich, savory au jus. This isn’t just a sandwich; it’s an experience.
In today’s busy world, finding recipes that deliver incredible taste without demanding hours of hands-on preparation is a true culinary win. This easy tri tip recipe is exactly that. With approximately just 20 minutes of active prep time, your trusty crock pot handles the heavy lifting, transforming a simple cut of beef into a succulent masterpiece. While it simmers away, filling your home with an irresistible aroma, you’re free to tackle other tasks or simply relax. The result? A French Dip sandwich that rivals your favorite deli, right in your own kitchen.
This delightful sandwich is perfect for a comforting weeknight dinner, a casual weekend gathering, or even meal prepping for delicious lunches throughout the week. Pair it with a side of crispy Rosemary Garlic Sweet Potato Fries for a harmonious flavor profile, or indulge in creamy Rosemary Blue Cheese Mashed Potatoes for a truly decadent meal. Get ready to impress your taste buds and simplify your cooking routine with this unforgettable Slow Cooker Tri Tip French Dip.

Get ready for an explosion of flavor! Picture this: succulent, slow-cooked beef, perfectly seasoned, meeting the subtle kick of creamy horseradish and the comforting embrace of melted cheese. All of this goodness piled high on fragrant rosemary focaccia bread, just begging to be dipped into a warm, savory au jus. If that doesn’t make your mouth water, we don’t know what will!
This sandwich truly stands out from the crowd, not only for its incredible taste but also for its surprising ease of preparation. The secret lies in the humble slow cooker, which works wonders on a tri-tip roast, tenderizing it to perfection and infusing it with deep, rich flavors. It’s the kind of meal that feels gourmet but requires minimal effort, making it ideal for busy weekdays or relaxed weekends.
The journey to this extraordinary sandwich begins by simply placing a tri-tip roast in your crock pot. Surround it with fresh rosemary, aromatic garlic, sliced onion, a generous sprinkle of salt and pepper, then pour in rich beef broth and a splash of Worcestershire sauce. Cover it, set it, and let the magic happen. As the hours pass, your kitchen will fill with an incredible aroma, a delicious preview of the meal to come.
Once the tri-tip has finished its slow dance in the crock pot, it will be incredibly tender, ready to be easily shredded with two forks. This juicy, flavorful beef then becomes the star of your French Dip. Layer it generously onto rosemary focaccia rolls, top with your preferred cheese – horseradish cheddar for a zesty bite or classic Swiss for smooth creaminess – and a dollop of creamy horseradish spread. For the ultimate dipping experience, spoon out some of the savory broth from the crock pot, known as “au jus,” to serve on the side. In just a few simple steps, you’ve created an exceptional French Dip sandwich that will have everyone asking for seconds!
Table of contents
- How to make tri tip in a Crock Pot
- How to make a French Dip
- What is au jus?
- How to store and reheat
- More slow cooker recipes

Mastering Tri Tip in Your Slow Cooker
Cooking tri-tip in a slow cooker is a game-changer, yielding incredibly tender and flavorful beef with minimal effort. This method is perfect for transforming a lean cut like tri-tip into a succulent, shreddable protein ideal for sandwiches, tacos, or even a hearty main dish. Follow these straightforward steps to achieve slow-cooked perfection:
- **Prepare the Crock Pot Base:** Begin by layering sliced onions on the bottom of your slow cooker. These onions will not only add a foundational layer of flavor but will also prevent the tri-tip from sticking and help create a rich cooking liquid.
- **Craft the Flavor Rub:** In a small bowl, combine your aromatic seasonings: freshly crushed garlic, finely chopped fresh rosemary, kosher salt, and ground black pepper. This blend of ingredients is crucial for infusing the beef with its signature rosemary-garlic flavor.
- **Season the Tri Tip:** Generously rub the prepared seasoning mixture all over a 3 lb trimmed tri-tip steak. Ensure every surface is coated to maximize flavor penetration. This rub forms a delicious crust and infuses the meat as it cooks.
- **Place in Slow Cooker:** Carefully place the seasoned tri-tip steak directly on top of the sliced onions in the crock pot.
- **Add Liquids:** Pour in the beef broth and Worcestershire sauce. These liquids will combine with the meat juices and seasonings to create the incredible au jus, while also keeping the beef moist and tender throughout the long cooking process.
- **Slow Cook to Perfection:** Cover your slow cooker and cook on high for 6 hours, or on low for 10-12 hours. The longer, slower cooking time on low heat typically results in even more tender and flavorful beef. Always ensure the internal temperature of the beef reaches a safe level for shredding.
- **Shred the Beef:** Once the tri-tip is fully cooked and fork-tender, use two forks to effortlessly shred the meat directly in the crock pot. It will easily pull apart, mingling with the onions and flavorful cooking liquid. Your perfectly tender rosemary garlic tri-tip is now ready for assembly!

Assembling Your Dream French Dip Sandwich
Once your rosemary garlic tri-tip is beautifully slow-cooked and shredded, it’s time to transform it into the legendary French Dip sandwich. The combination of savory beef, melted cheese, creamy horseradish, and a perfect dipping broth is truly unparalleled.
- **Prepare Your Rolls:** Start by slicing your rosemary focaccia rolls in half horizontally. Focaccia provides a wonderful texture and aromatic base for this sandwich, but other options like classic French rolls, hoagie rolls, or ciabatta bread also work beautifully. You can often find rosemary focaccia rolls in the bakery section of your local grocery store. Alternatively, for a truly homemade touch, consider using a homemade Rosemary Focaccia Bread recipe, simply dividing the dough into six portions to create individual rolls instead of two large loaves.
- **Layer the Beef:** Place a generous heap of the slow-cooked shredded tri-tip and softened onions onto the bottom half of each focaccia roll. Don’t be shy – the more beef, the better!
- **Add the Cheese:** Cover the shredded tri-tip with slices or shredded horseradish cheddar cheese, or classic Swiss cheese. Horseradish cheddar cheese adds a fantastic subtle kick that complements the rich beef beautifully. Look for specialty cheeses like Cabot Horseradish Cheddar in the deli section of most grocery stores.
- **Melt the Cheese to Perfection:** Carefully place the open-faced sandwiches under the broiler in your oven on a low setting for about 2 minutes, or until the cheese has gloriously melted and is bubbling over the meat. Keep a close eye on them to prevent burning. If desired, you can also toast the top halves of the buns for 1-2 minutes during this step for added crispiness.
- **Apply Creamy Horseradish:** While the cheese is melting, spread a light layer of creamy horseradish on the top half of each focaccia roll. This adds a crucial element of flavor and moisture.
- **Assemble and Serve:** Once the cheese is melted and the buns are toasted, place the top half of the roll onto the sandwich. Ladle a cup of the rich, savory broth (au jus) from the slow cooker into a small bowl and serve it alongside each sandwich for dipping. This dipping experience is what truly defines a French Dip!
Each bite of this French Dip sandwich is a delightful symphony of textures and flavors – from the tender, flavorful beef and melted cheese to the crispy focaccia and the satisfying warmth of the au jus. Enjoy the fruits of your slow-cooking labor!
Understanding Au Jus: The Heart of a French Dip
When you encounter a French Dip sandwich, the accompanying rich, savory liquid is undeniably a star of the show. This flavorful dipping sauce is known as **Au Jus**, a French term literally meaning “with juice.” In the culinary world, it refers to the natural juices released from meat as it cooks. Far from being a mere accompaniment, au jus is integral to the French Dip experience, enhancing the sandwich with moisture and a concentrated burst of meaty flavor.
In this particular Slow Cooker Rosemary Garlic Tri Tip recipe, the au jus develops beautifully within the crock pot itself. It’s a harmonious blend of the beef broth and Worcestershire sauce added at the beginning, combined with all the delicious juices rendered by the tri-tip as it slowly braises. This long, gentle cooking process allows the flavors to meld and intensify, creating a deeply aromatic and savory broth that perfectly complements the rosemary garlic-infused beef.
The au jus is more than just a sauce; it’s the very reason the French Dip sandwich got its name. The “French” part refers to the traditional French roll on which the sandwich was often served, while “Dip” comes directly from the act of dipping the sandwich into this irresistible au jus. It’s a simple yet brilliant concept that elevates a humble beef sandwich into a culinary icon. The warmth and moisture of the au jus soften the bread just enough, while each dip drenches the tender beef in even more flavor, creating a truly satisfying and memorable bite.
Storage and Reheating Tips for Your Tri Tip
One of the many benefits of this slow cooker tri-tip recipe is its excellent make-ahead and storage potential. You can enjoy delicious French Dip sandwiches or other creative meals throughout the week with minimal effort.
Storing Cooked Tri Tip
The cooked and shredded tri-tip, stored properly, will remain fresh and flavorful in the refrigerator for 5-7 days. Simply transfer the cooled beef and any remaining au jus into an airtight container. Separating the beef from the au jus can sometimes help maintain texture, but storing them together will keep the beef incredibly moist and infuse it with even more flavor. This makes it perfect for meal prepping and enjoying delicious sandwiches for several days.
Creative Ways to Enjoy Leftovers
While the French Dip sandwich is undeniably delicious, the versatile rosemary garlic tri-tip can be repurposed into a variety of other meals. If you’re looking to switch things up, consider adding the shredded beef to a baked sweet potato. This combination is surprisingly delightful, offering a wonderful balance of savory beef with the creamy sweetness of a roasted sweet potato. The rosemary garlic notes in the beef pair perfectly with the earthy flavor of the potato.
To prepare: Simply pop a sweet potato into a preheated oven at 400°F (200°C) for approximately an hour, or until it’s fork-tender (cooking time may vary depending on the size of the potato). Once cooked, slice the potato open, fluff the interior, and generously fill it with the juicy, flavorful shredded beef. Top with a dollop of sour cream or a sprinkle of chives for an extra touch.
Reheating Instructions
Reheating the tri-tip is quick and easy, ensuring your leftovers taste just as good as the first serving:
- **Oven Method:** For best results and to prevent drying out, reheat the shredded tri-tip in the oven. Preheat your oven to 350°F (175°C). Place the beef in an oven-safe dish, adding a splash of au jus or beef broth to keep it moist. Cover the dish with foil and heat for about 10-15 minutes, or until thoroughly warmed through.
- **Microwave Method:** If you’re short on time, the tri-tip can also be reheated in the microwave. Place a portion of beef in a microwave-safe bowl, again adding a tablespoon or two of au jus or broth. Cover loosely and microwave on high for 2-3 minutes, stirring halfway through, until hot. Be careful not to overcook, as this can dry out the meat.
With these storage and reheating tips, you can enjoy your delicious rosemary garlic tri-tip in many forms, making it a valuable addition to your recipe repertoire.

Explore More Delicious Slow Cooker Recipes
If you’ve fallen in love with the convenience and incredible flavor of slow cooking, you’re in for a treat! The slow cooker is a versatile kitchen appliance that can transform everyday ingredients into spectacular meals with minimal effort. Here are some more popular and easy slow cooker recipes to add to your culinary rotation:
- Slow Cooker French Onion Soup with Meatballs: A hearty and comforting twist on a classic, perfect for chilly evenings.
- Slow Cooker Chipotle Honey Pulled Pork Tacos: Sweet, spicy, and incredibly tender pork, ideal for flavorful tacos or sliders.
- Dr Pepper Pulled Pork Sliders: An unexpectedly delicious blend of savory pork and sweet soda, resulting in incredibly moist and tangy pulled pork.
- Buffalo Crock Pot Mac & Cheese: A creamy, cheesy classic with a spicy buffalo kick, made effortlessly in your slow cooker.
- Slow Cooker Buffalo Cheesy Sausage Balls: Perfect for appetizers or a party snack, these are bursting with flavor.
- Crock Pot Taco Soup: An easy and satisfying soup packed with all your favorite taco flavors.
- Slow Cooker Beef Barbacoa: Tender, spiced beef perfect for tacos, burritos, or bowls, bringing authentic flavors to your table.
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Slow Cooker Tri Tip French Dip
Rosemary Garlic Tri Tip is slow cooked in a crock pot, shredded, then served on rosemary focaccia bread with au jus in this scrumptious French Dip recipe!
Servings: 6 sandwiches
Prep Time: 20 mins
Cook Time: 6 hrs
Total Time: 6 hrs 30 mins
Author: Whitney Bond
Course: Main Course, Sandwich
Cuisine: American
Ingredients
- 1 large onion, sliced
- 1 tsp kosher salt
- 1 tsp ground black pepper
- 4 cloves garlic, crushed
- 2 tbsp fresh rosemary, chopped + 1 fresh rosemary sprig
- 3 lb tri tip steak, fat trimmed
- 2 tbsp Worcestershire sauce
- 4 cups beef broth
- 1 bay leaf
- 6 rosemary focaccia rolls, (see notes for homemade recipe)
- 2 cups horseradish cheddar cheese, shredded
- ¼ cup creamy horseradish
Instructions
- Place the sliced onion in the bottom of a slow cooker, set to high heat.
- Combine the kosher salt, black pepper, crushed garlic, and chopped fresh rosemary in a small bowl.
- Rub this mixture on the tri tip, then place it in the slow cooker on top of the onion.
- Pour the Worcestershire sauce and beef broth into the slow cooker.
- Add the bay leaf and rosemary sprig to the slow cooker.
- Cover and cook on high for 6 hours or on low for 10-12 hours.
- Once the tri tip is cooked, use two forks to shred the beef apart in the crock pot.
- Slice the focaccia rolls in half and place a heaping spoonful of shredded tri tip and slow-cooked onions on the bottom half of the roll.
- Top with the horseradish cheddar cheese.
- Place under the broiler on low in the oven for 2-3 minutes, or until the cheese has melted over the meat.
- Place the top half of the buns in the broiler with the sandwich to toast for 1-2 minutes.
- Spread a light amount of creamy horseradish on the top half of the roll, then place it on the sandwich.
- Drain the liquid from the slow cooked tri tip to serve as the au jus on the side for dipping.
Notes
- Cheese: Sliced Swiss cheese can be used in place of the horseradish cheddar cheese.
- Bread: French rolls can be used in place of focaccia rolls.
- Focaccia Rolls: If using the focaccia bread recipe linked in this post, divide the dough into 6 balls to make 6 rolls instead of 2 loaves of bread.
Nutrition Facts
Calories 731kcal (37%) | Carbohydrates 38g (13%) | Protein 63g (126%) | Fat 34g (52%) | Saturated Fat 15g (75%) | Cholesterol 189mg (63%) | Sodium 1725mg (72%) | Potassium 946mg (27%) | Fiber 1g (4%) | Sugar 6g (7%) | Vitamin A 395mg (8%) | Vitamin C 5.2mg (6%) | Calcium 366mg (37%) | Iron 15mg (83%)
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