Why You’ll Love This Recipe

This recipe delivers restaurant-quality steak bites with minimal effort. The slow cooker ensures the steak stays tender while soaking up the rich flavors of onions, garlic, and beef stock. The addition of butter and au jus gravy creates a luscious sauce that coats every bite. It’s easy, crowd-pleasing, and perfect for entertaining or meal prep.

Ingredients

3 pounds sirloin steak, cut into bite-sized pieces
2 teaspoons kosher salt
1 teaspoon black pepper
2 tablespoons vegetable oil
1 small sweet onion, thinly sliced
3 cloves garlic, thinly sliced
1 cup unsalted beef stock
1 ounce packet au jus gravy mix
4 tablespoons unsalted butter, thinly sliced
Fresh chopped parsley for garnish (optional)

Directions

Season steak pieces with salt and pepper.
In a large skillet, heat vegetable oil over medium-high heat. Sear steak pieces in batches for 1–2 minutes per side until browned. Transfer to the slow cooker.
Add sliced onion and garlic to the slow cooker with steak. Pour in beef stock and sprinkle in the au jus gravy mix. Stir to combine.
Cover and cook on low for 4–5 hours or on high for 2–3 hours, until steak is tender.
About 15 minutes before serving, add butter slices and stir to incorporate, creating a rich, glossy sauce.
Garnish with fresh parsley if desired and serve hot over rice, mashed potatoes, or noodles.

Servings and Timing

Makes about 6–8 servings
Prep time: 15 minutes
Cook time: 2–5 hours (depending on slow cooker setting)
Total time: 2 hours 15 minutes to 5 hours 15 minutes

Variations

Spicy: Add red pepper flakes or a dash of cayenne for heat.
Mushroom Addition: Sauté mushrooms with onions for extra flavor.
Garlic Lovers: Add extra sliced garlic or roasted garlic for depth.
Meal Prep-Friendly: Cook in advance and store steak bites with sauce in an airtight container for up to 3 days in the fridge.
Oven Option: Sear steak and bake covered at 350°F (175°C) for 30–40 minutes instead of using a slow cooker.

Storage/Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stove or in the microwave, adding a splash of beef stock if needed to loosen the sauce.

FAQs

Can I use another cut of steak?

Yes, ribeye, strip, or flank steak can also work just adjust cooking time as needed.

Can I make this gluten-free?

Yes, ensure the au jus mix is gluten-free or make your own gluten-free version.

Can I add vegetables?

Yes, carrots, bell peppers, or mushrooms can be added during the last hour of cooking.

How do I get a richer sauce?

Finish with butter and let it melt into the slow cooker sauce for a glossy, rich finish.

Can I freeze this dish?

Yes, store steak and sauce in a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator before reheating.

Conclusion

The BEST Slow Cooker Steak Bites are tender, juicy, and bursting with flavor. Minimal prep, slow-cooked perfection, and a rich, savory sauce make this dish ideal for family dinners, meal prep, or casual entertaining. Serve with your favorite sides for a complete, comforting meal that’s guaranteed to impress.