There’s nothing quite like coming home to a batch of Slow Cooker Garlic Butter Steak Bites, where juicy morsels of sirloin luxuriate in a pool of velvety garlic butter sauce. This recipe is a true fix-it-and-forget-it gem: you’ll sear the steak for major flavor, then let your slow cooker do the magic, transforming simple ingredients into a melt-in-your-mouth main course that delivers big on both taste and comfort. Whether you’re feeding a family or want a savory meal with minimal fuss, Slow Cooker Garlic Butter Steak Bites are guaranteed to satisfy steak lovers and garlic fans alike.

Ingredients You’ll Need
The best part about this recipe is how each basic ingredient elevates the overall dish—think juicy beef, aromatic garlic, and that rich, decadent butter. These ingredients may be easy to find, but each one brings a crucial layer of flavor or texture to your Slow Cooker Garlic Butter Steak Bites.
- Sirloin steak: Go for 3 pounds, cut into bite-sized pieces; this cut is wonderfully tender after slow cooking and soaks up all that garlicky goodness.
- Kosher salt: Two teaspoons help enhance the natural beefy flavor and ensure every bite pops.
- Black pepper: A teaspoon adds gentle heat and complexity that balances the buttery sauce.
- Vegetable oil: One tablespoon gets you a proper sear on the steak; add more as needed for a gorgeous golden crust.
- Sweet onion: Thinly slice one small sweet onion for subtle sweetness and depth in every forkful.
- Garlic: You’ll need three cloves, thinly sliced; the real star here, it infuses the meat and sauce with bold, mouthwatering aroma.
- Unsalted beef stock: Pour in one cup for a savory backdrop that keeps everything moist and flavorful.
- Au jus gravy mix: Use a one ounce packet to instantly enrich the sauce with meaty, savory depth—no extra work required!
- Unsalted butter: Four tablespoons, thinly sliced and layered on top, melt into a luxurious sauce the steak bites swim in.
How to Make Slow Cooker Garlic Butter Steak Bites
Step 1: Season the Steak
Place your bite-sized pieces of sirloin steak in a large bowl, sprinkle with kosher salt and black pepper, and toss to coat every morsel. Seasoning now ensures the steak absorbs plenty of flavor—even before it hits the slow cooker!
Step 2: Sear for Flavor
Heat a large skillet over medium-high and add the vegetable oil. Once it’s sizzling, sear the steak bites in batches, browning the outside but leaving the centers pink—this step builds savory depths and locks in all those juices. Add more oil between batches if the pan gets dry.
Step 3: Load the Slow Cooker
Transfer the beautifully browned steak bites into your six-quart slow cooker. Scatter the sliced onions and garlic over the top, gently mixing so the aromatics touch every piece of beef for that signature Slow Cooker Garlic Butter Steak Bites flavor.
Step 4: Add the Liquid Gold
Pour the unsalted beef stock evenly over everything in the slow cooker. Sprinkle the au jus gravy mix on top—don’t worry about stirring it in, as it will melt into the sauce during cooking.
Step 5: Butter Up and Cook
Layer the thinly sliced unsalted butter all over the mixture. Pop the lid on your slow cooker and choose either high (cook for 3–4 hours) or low (cook for 6–8 hours). Stir once an hour if you’re around; this helps keep the sauce glossy and well-blended.
Step 6: Serve and Savor
When your kitchen fills with the irresistible scent of garlic and beef, you’ll know Slow Cooker Garlic Butter Steak Bites are ready. Serve straight from the slow cooker or over mashed potatoes, egg noodles, or fluffy rice.
How to Serve Slow Cooker Garlic Butter Steak Bites

Garnishes
Bring out even more flavor with fresh chopped parsley, extra cracked pepper, or a dusting of flaky sea salt. A sprinkle of parmesan or a squeeze of lemon juice just before serving can add a tasty finishing touch.
Side Dishes
Classic mashed potatoes, egg noodles, or buttery rice are perfect bases for soaking up that luscious garlic butter sauce. Roasted vegetables, creamed spinach, or a crusty loaf of bread also make fantastic sides for this rich, hearty dish.
Creative Ways to Present
Serve Slow Cooker Garlic Butter Steak Bites at a party with toothpicks for a savory appetizer, pile them atop garlic toast for a decadent steak sandwich, or spoon them over baked potatoes for an indulgent twist. They’re as versatile as they are flavorful!
Make Ahead and Storage
Storing Leftovers
Transfer any leftover steak bites and sauce to an airtight container and refrigerate within two hours of cooking. They’ll stay fresh and delicious for up to three days—perfect for quick lunches or dinners!
Freezing
You can freeze Slow Cooker Garlic Butter Steak Bites! Cool completely, portion into freezer-safe containers or zip-top bags (with the sauce for maximum flavor and moisture), and store for up to three months. Thaw overnight in the refrigerator before reheating.
Reheating
For best results, reheat gently in a saucepan over low heat, adding a splash of beef broth if the sauce thickened in the fridge. You can also use the microwave—cover loosely and heat in short bursts, stirring halfway through, so the steak remains juicy.
FAQs
Can I use a different cut of steak for Slow Cooker Garlic Butter Steak Bites?
Definitely! While sirloin delivers great tenderness and flavor, you can substitute with chuck, ribeye, or even stew meat if you’d like. Just keep in mind that fattier cuts may need a little extra trimming.
Is it necessary to sear the steak before cooking?
While you can technically skip this step in a rush, searing caramelizes the beef’s surface, intensifying its flavor and adding beautiful color to Slow Cooker Garlic Butter Steak Bites. It’s worth the extra few minutes!
Can I make this recipe in advance?
Absolutely—these steak bites reheat beautifully, so don’t hesitate to prep them ahead for meal planning or special occasions. The flavors deepen as they sit, making leftovers just as delicious.
What can I use instead of au jus gravy mix?
If you don’t have au jus gravy mix, use beef bouillon powder, onion soup mix, or even a homemade blend of beef stock and seasonings. Just taste and adjust salt as needed.
How do I keep the steak bites from drying out?
Cooking on low and not overcooking is key, as is keeping the sauce plentiful. The beef stock and butter ensure Slow Cooker Garlic Butter Steak Bites stay juicy and tender every time.
Final Thoughts
Few things are more satisfying than digging into a plate of Slow Cooker Garlic Butter Steak Bites at the end of a long day. This dish is pure comfort, packed with hearty flavor and buttery richness. If you love easy, crowd-pleasing meals that make your kitchen smell heavenly, you owe it to yourself to give this recipe a spot on your dinner table soon!
Print
Slow Cooker Garlic Butter Steak Bites Recipe
- Total Time: 4 hours 15 minutes
- Yield: 8 servings
- Diet: Gluten Free
Description
These Slow Cooker Garlic Butter Steak Bites are melt-in-your-mouth tender, juicy, and bursting with savory garlic butter flavor. Perfect for a no-fuss, fix-it-and-forget-it meal, this recipe uses sirloin steak slow-cooked with onions, garlic, beef stock, and au jus for a hearty dish that’s simple yet delicious. Serve it as a comforting main course over mashed potatoes, noodles, or rice for a satisfying family dinner.
Ingredients
For the Steak Bites
- 3 pounds sirloin steak, cut into bite-sized pieces
- 2 teaspoons kosher salt
- 1 teaspoon black pepper
- 1 tablespoon vegetable oil (plus more as needed)
For the Slow Cooker
- 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
Instructions
- Season the Steak: Place the steak pieces into a large bowl, sprinkle with kosher salt and black pepper, and toss thoroughly to season all sides.
- Sear the Steak: Heat a large skillet over medium-high heat, add vegetable oil, and once shimmering hot, sear the steak pieces in batches. Brown them just until they develop color on the outside, not cooking fully. Add more oil if needed between batches.
- Layer the Slow Cooker: Transfer all seared steak pieces into a 6-quart slow cooker. Add the thinly sliced sweet onion and garlic, gently stirring to combine and distribute evenly.
- Add Liquids and Seasoning: Pour the unsalted beef stock over the steak mixture. Evenly sprinkle the au jus gravy mix all over the top. Lay the sliced butter over everything.
- Slow Cook: Cover the slow cooker with its lid. Cook on high for 3-4 hours or on low for 6-8 hours, stirring once an hour if possible to ensure even cooking and flavor.
- Serve: Once the steak bites are fork-tender and infused with garlic butter flavor, serve hot. Enjoy over mashed potatoes, egg noodles, or rice for a complete meal.
Notes
- Searing the steak before slow cooking helps lock in flavor and gives a richer color and taste.
- You can use other cuts of steak, but sirloin works best for tenderness and flavor in the slow cooker.
- Leftovers keep well in an airtight container in the refrigerator for up to 3 days.
- For extra flavor, garnish with chopped parsley or add a splash of Worcestershire sauce before serving.
- Prep Time: 15 minutes
- Cook Time: 4 hours
- Category: Main-course
- Method: Slow Cooking
- Cuisine: American
Nutrition
- Serving Size: 1/8 of recipe
- Calories: 330
- Sugar: 1g
- Sodium: 980mg
- Fat: 20g
- Saturated Fat: 8g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 4g
- Fiber: 0g
- Protein: 32g
- Cholesterol: 110mg