Cowboy Butter Broccoli Sirloin Tips: 5-Ingredient Crockpot Dinner Tips, FAQ & printable recipe

Tips for success

For the most tender beef, always choose sirloin tips that are well-marbled. The fat renders during cooking, keeping the meat moist and adding flavor.

If you have time, sear the steak tips in a hot skillet before adding them to the slow cooker—this adds a deeper, caramelized flavor that elevates the dish. However, the recipe works perfectly without this step, so don't feel obligated.

When serving, use a slotted spoon to transfer the beef and vegetables to plates, then spoon the sauce over the top. This prevents the mashed potatoes from becoming too soupy. If you have leftovers, store them in an airtight container in the refrigerator for up to 4 days. The flavors will continue to meld, making the leftovers even more delicious.

Variations

• Low-Carb Option: Skip the mashed potatoes and serve the beef and broccoli over cauliflower mash or zucchini noodles. The rich gravy and tender meat are satisfying enough to stand alone, and you'll keep the carbs in check.
• Spicy Kick: Add a teaspoon of red pepper flakes or a chopped jalapeño to the slow cooker along with the other ingredients. The heat will balance the richness of the butter and add a pleasant warmth to the dish.
• Extra Veggies: Feel free to add other quick-cooking vegetables like bell peppers, snap peas, or green beans in place of some of the broccoli. Keep the total volume about the same to avoid overcrowding the slow cooker.
• Cheesy Twist: Stir in a cup of shredded sharp cheddar cheese during the last 10 minutes of cooking. The cheese will melt into the sauce, creating an even richer, creamier gravy that's perfect for topping baked potatoes.

Storage and make-ahead

Fridge

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat gently, adding a splash of broth if needed.

Freezer

Freeze in an airtight container for up to 3 months. Thaw overnight in the refrigerator before reheating.

Reheat

Reheat in a saucepan over medium-low heat, stirring occasionally, until heated through. Add a little beef broth to loosen the sauce if necessary.

Store leftovers in an airtight container in the refrigerator for up to 4 days. The beef and vegetables will absorb more of the sauce as they sit, so the flavor will intensify.

Reheat gently in the microwave or on the stovetop, adding a splash of beef broth or water if the sauce has thickened too much. For best results, reheat only the amount you plan to eat.

This recipe is perfect for meal prep. You can assemble the ingredients in the slow cooker insert the night before, cover, and refrigerate.

In the morning, place the insert in the slow cooker base and cook as directed. If you're short on time, you can also cook the dish on high for 2 to 3 hours, though low and slow yields the most tender results.

Serving ideas

Serve this cowboy butter broccoli sirloin tips over a generous scoop of creamy mashed potatoes. The rich, buttery gravy is perfect for soaking into the potatoes, making each bite a comforting combination of flavors and textures.

For a lighter option, serve over steamed rice or cauliflower mash. A side of crusty bread is also excellent for dipping into the sauce.

Garnish with a sprinkle of fresh parsley or chives if you like, though the dish is delicious on its own. This is a hearty, satisfying meal that can be enjoyed on its own or paired with a simple green salad. The leftovers are just as good the next day, making it a great choice for batch cooking.

Frequently asked questions

Recipe card

Cowboy Butter Broccoli Sirloin Tips: 5-Ingredient Crockpot Dinner

Prep 5 minCook 4 hTotal 4 h 5 minServes 4

Ingredients

• 2 lb sirloin steak tips
• 3 cups fresh broccoli florets
• 8 oz baby bella mushrooms, sliced
• 2 sticks garlic-herb cowboy butter
• 1 oz au jus mix

Instructions

1. Place the sirloin steak tips in the bottom of a 6-quart slow cooker in an even layer. Scatter the broccoli florets and sliced mushrooms over the beef. Place the sticks of garlic-herb cowboy butter on top, then sprinkle the au jus mix evenly over everything.
2. Cover the slow cooker and cook on low for 4 to 5 hours, or on high for 2 to 3 hours, until the beef is fork-tender and the broccoli is crisp-tender. The butter will melt into the au jus, creating a rich gravy that coats the meat and vegetables. Let it rest for 3 minutes before slicing.
3. After the minimum cooking time, check the internal temperature of the thickest piece of steak with an instant-read thermometer. It should read at least 145°F (63°C). If it hasn't reached that temperature, continue cooking for another 30 minutes and check again.
4. Turn off the slow cooker and let the beef rest for at least 3 minutes before serving. This allows the juices to redistribute throughout the meat, ensuring every bite is moist and flavorful.
5. Spoon the beef, broccoli, mushrooms, and gravy over creamy mashed potatoes on individual plates. Ladle extra sauce over the top for maximum flavor.

Contains: milk, gluten

Estimated nutrition per serving

Calories

420

Protein

38 g

Carbohydrates

12 g

Fat

26 g

Fiber

3 g

Sugar

5 g

Automatic estimate from the ingredient list, not laboratory-verified.