Dinner · Part 3 of 3: Tips & recipe card

Cowboy Butter Mushroom Beef Bites: 5-Ingredient Crockpot Dinner Tips, FAQ & printable recipe

Name: Cowboy Butter Mushroom Beef Bites: 5-Ingredient Crockpot Dinner
Prep time: 10 min
Cook time: 8 h
Total time: 8 h 10 min
Cuisine: American
Ingredients: 2 lb beef chuck stew meat, cut into 1-inch cubes; 1 can (10.5 oz) condensed cream of mushroom soup; 1 medium yellow onion, diced; 2 sticks (1/2 cup each) garlic-herb compound butter (cowboy butter), sliced; 1 oz dry au jus gravy mix; 8 oz sliced white mushrooms

By Clara Weller · Oct 28, 2026

Slow cooker cowboy butter mushroom beef bites in a black crockpot with a spoon lifting a bite.

Prep: 10 min
Cook: 8 h
Total: 8 h 10 min
Serves: 6

Tips for success

For the best flavor, use a good-quality beef chuck that has visible marbling. The fat renders during cooking, keeping the meat moist and adding richness to the sauce.

If you have time, sear the beef in a hot skillet before adding it to the slow cooker—this adds a deeper color and flavor, though it’s not required for this dump-and-go recipe.

To make the sauce even thicker, remove the beef and vegetables with a slotted spoon, then whisk 1 tablespoon cornstarch with 2 tablespoons cold water into the hot gravy.

Cook on high for 10 minutes until thickened. Or, simply serve the sauce as is—it’s already rich and flavorful. For a touch of brightness, garnish with fresh chopped parsley before serving.

Variations

Add Vegetables: Stir in 2 cups of baby carrots or sliced carrots along with the onions. They’ll soften and absorb the sauce, adding natural sweetness. You can also add chopped celery or bell peppers for extra crunch.
Spicy Kick: Add 1-2 teaspoons of crushed red pepper flakes or a diced jalapeño to the slow cooker along with the other ingredients. The heat will mellow as it cooks, leaving a subtle warmth. For more heat, serve with hot sauce on the side.
Herb Boost: Add 2 sprigs of fresh thyme or rosemary to the slow cooker during cooking. Remove them before serving. The herbs infuse the sauce with an aromatic, woodsy flavor that complements the garlic butter beautifully.
Creamy Version: Stir in 1/2 cup of sour cream or cream cheese during the last 30 minutes of cooking. This adds a tangy, creamy richness to the sauce. Be careful not to boil after adding, or the dairy may curdle.

Storage and make-ahead

Fridge: Store leftovers in an airtight container in the refrigerator for up to 4 days.
Freezer: Freeze cooled leftovers in a freezer-safe 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 hot and bubbling. Add a little beef broth or water to loosen the sauce if necessary.

Store leftovers in an airtight container in the refrigerator for up to 4 days. The beef will continue to absorb the sauce, so it may be even more flavorful the next day.

Reheat gently in the microwave or on the stovetop, adding a splash of beef broth or water if the sauce has thickened too much.

You can assemble the entire dish in the slow cooker insert the night before, cover, and refrigerate. In the morning, simply place the insert in the slow cooker base and cook on low.

This is a great time-saver for busy days. Alternatively, cook the full recipe, cool, and refrigerate for up to 3 days before reheating.

Serving ideas

This dish is hearty enough to stand alone, but it shines over a bed of creamy mashed potatoes. The potatoes soak up the rich gravy, making every bite satisfying. For a lighter option, serve over cauliflower mash or steamed rice. A side of crusty bread or a simple green salad rounds out the meal.

For a more substantial presentation, spoon the beef and sauce over cooked egg noodles or polenta. Garnish with fresh thyme or parsley for a pop of color. The leftovers also make a fantastic filling for tacos or sandwiches—just shred the beef and pile it high with the onions and mushrooms.

Frequently asked questions

Can this recipe be made ahead of time?

Yes, the entire dish can be assembled in the slow cooker insert the night before and refrigerated. In the morning, place the insert into the base and cook as directed. You may need to add 30 minutes to the cooking time since the ingredients start cold. Leftovers also keep well for up to 4 days in the refrigerator.

What can be substituted for the cream of mushroom soup?

Cream of chicken soup is the easiest substitute and will yield a similar creamy texture. For a dairy-free option, use a can of coconut milk mixed with 1 tablespoon of cornstarch to thicken. However, the flavor will change slightly. The soup is key to the sauce’s body, so it’s best not to skip it entirely.

Why is the beef not tender after cooking?

Tough beef usually means it wasn’t cooked long enough. Chuck needs a long, slow cook to break down its connective tissue. If the beef is still chewy after the recommended time, continue cooking on low for another hour, checking every 30 minutes. Also, ensure the slow cooker is at least half full for even heat distribution.

Can the beef be cooked on high instead of low?

Yes, you can cook on high for 4 to 5 hours instead of 8 to 10 on low. The result will be similar, though the meat may be slightly less tender. High heat is fine for this recipe, but be sure not to overcook, or the beef can become dry. Always check for fork-tenderness before serving.

Is it necessary to brown the beef first?

No, browning is optional. The slow cooker will still produce tender, flavorful beef without searing. However, browning the cubes in a hot skillet before adding them to the slow cooker adds a deeper, caramelized flavor and a richer color to the final dish. If you have the time, it’s a worthwhile extra step.

Recipe card

Cowboy Butter Mushroom Beef Bites: 5-Ingredient Crockpot Dinner

Prep 10 minCook 8 hTotal 8 h 10 minServes 6

Ingredients

2 lb beef chuck stew meat, cut into 1-inch cubes
1 can (10.5 oz) condensed cream of mushroom soup
1 medium yellow onion, diced
2 sticks (1/2 cup each) garlic-herb compound butter (cowboy butter), sliced
1 oz dry au jus gravy mix
8 oz sliced white mushrooms

Instructions

Place the cubed beef chuck in the bottom of a 6-quart slow cooker. Spread the condensed cream of mushroom soup over the beef, then scatter the diced onion on top. Add the sliced mushrooms if using. Place the sticks of garlic-herb butter over the mixture, then sprinkle the dry au jus mix evenly over everything.
Cover the slow cooker with the lid. Cook on LOW for 8 to 10 hours, or on HIGH for 4 to 5 hours, until the beef is fork-tender and easily shreds.
After the minimum cooking time, check the beef by piercing a cube with a fork. It should slide off the fork easily and break apart with light pressure. If not, continue cooking in 30-minute increments until tender. Let it rest for 3 minutes before slicing.
Turn off the slow cooker and let the beef rest in the hot gravy for at least 3 minutes before serving. This allows the juices to redistribute and the meat to stay moist.
Spoon the beef, mushrooms, and onions over warm mashed potatoes, then ladle the rich gravy over the top. Serve hot.

Contains: gluten, milk, celery

Estimated nutrition per serving

Calories: 510
Protein: 32 g
Carbohydrates: 12 g
Fat: 38 g

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

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This recipe is based on a short cooking video and is published under the pen name Clara Weller. It was checked before publication, but errors can slip through. Nutrition, when shown, is an estimate. Read more in our editorial policy and on our food safety page.