The pressure builds and you start counting down minutes until you eat. It kinda feels like you’re racing against the clock, but not in a stressy way. You just know something comforting is waiting for you on the other side of that valve hiss.

When that float valve finally pops up, it’s like a green light telling you dinner’s almost ready. You feel that little thrill before the natural release finishes and you can open the lid. The scent of garlic butter and steak fills your kitchen turning it into a warm little haven.
You spot the rich broth depth that the slow cooking brings out, soaking into every bite of that tender sirloin. It's crazy how something so simple ended up tasting so full of love. You recall thinking you gotta make this again, for real soon.
What Makes Pressure Cooking Win Every Round
- Locks in flavors so the steak and garlic taste really deep and rich.
- Cuts down cooking time way more than the oven or stovetop.
- Keeps the meat tender enough to melt in your mouth, no joke.
- Float valve and pressure build tech means you're less babysitting and more chilling.
- Natural release lets the flavors mingle more before you dig in.
- Easy to use even if you’re new to pressure cooking.
- Less cleanup cause it’s usually one pot business.
Your Simple Ingredient Checklist
- 3 pounds sirloin steak, cut into bite-sized pieces.
- 2 teaspoons kosher salt to bring out that savory depth.
- 1 teaspoon black pepper for a little kick.
- 1 tablespoon vegetable oil for searing those steak pieces nice and brown.
- 1 small sweet onion, thinly sliced to add a gentle sweetness.
- 3 cloves garlic, thinly sliced 'cause garlic butter needs some real garlic.
- 1 cup unsalted beef stock to build that broth depth.
- 1-ounce packet au jus gravy mix for a little extra flavor punch.
- 4 tablespoons unsalted butter, thinly sliced to melt over everything and bring that richness.
You’re not messing around with too many ingredients here. Just the right stuff to boost natural goodness and keep it uncomplicated. When you grab quality beef stock, it makes a real difference in that broth depth you sense while cooking.

How It All Comes Together Step by Step
First up, season that steak with kosher salt and black pepper. Don’t be shy with the seasoning—that’s where the flavor starts.
Heat your vegetable oil in a big skillet over medium-high heat. You wanna see some sizzle action when you drop those steak bites in.
Sear the steak bites in batches so they brown all around. Toss 'em into the slow cooker once browned—it’s all about locking in flavor.
Next, toss your sliced onion and garlic into the skillet. Sauté these for 2 to 3 minutes until they’re soft and smelling awesome, then over to the slow cooker they go.
Pour in your beef stock, then sprinkle that au jus gravy mix over the meat and veggies in the cooker. Don’t forget to lay those thin slices of butter right on top.
Pop the lid on and set your slow cooker low for 4 to 5 hours or high for 2 to 3. This is where patience pays off and pressure build does its thing.
Before you serve, give it a quick stir. Taste test and tweak if you need a pinch more salt or pepper. It works real good to balance out that garlic butter sauce.
Valve Hacks You Need to Know
- Give your broth a swirl right after the float valve pops up to mix all those rich juices together.
- If you’re in a rush, quick release can work but be ready for a tiny steam burst—watch your hand!
- Holding the float valve down a sec after cooking helps keep heat in while you get stuff ready.
- Natural release is your friend—it lets pressure drop slowly so meat stays juicy.
- Keep the lid slightly tilted after natural release for a minute to help cool down before opening.
The Flavor Experience Waiting for You
You sense the garlic butter goodness dripping over every bite, soaking nicely into that tender sirloin. The broth depth comes through with a savory hug you didn’t expect but sure welcomed.
The onions melt right in, adding a soft sweetness that balances with the buttery richness perfectly. It’s kinda like a warm blanket on a chilly night, comforting and thick with flavor.
Every forkful tastes like you spent hours making it, even though pressure cooking cut that down. The whole kitchen carries that cozy scent, and you feel proud serving up something so scrumptious.

Your Leftover Strategy Guide
Store leftover steak bites in an airtight container in the fridge. They’ll keep good for 3 to 4 days, and the flavors actually get nicer after sitting a bit.
Freeze any extra in meal-sized portions if you wanna save some for later. Just thaw overnight in the fridge before reheating gently on the stove or microwave.
If you notice the sauce got thick, stir in a splash of beef stock or water when reheating. It brings back that perfect broth depth and buttery smoothness you want.
Everything Else You Wondered About
- Can I use a pressure cooker instead of a slow cooker? Yeah totally! Just adjust cooking time to about 20 minutes on high pressure, then natural release for juiciness.
- What if I don’t have au jus gravy mix? No sweat. Use a beef broth concentrate or gravy powder or even just a teaspoon of soy sauce for umami.
- Can I add veggies? Sure thing. Mushrooms, bell peppers, or green beans work well. Just toss them in during last 30 minutes if slow cooking.
- Why no mention of garlic powder? Slice that fresh garlic thin so you get that burst of real garlic flavor, way better than powder's dullness.
- What’s the deal with natural release? It helps pressure come down slow so juices settle, keeping meat tender and sauce rich.
- How do I keep steak bites from turning tough? Sear them well before slow cooking and don't overdo the high heat cooking time—follow time guides and you’re solid.
For related recipes, check out our Classic Crockpot Pierogi Casserole with Kielbasa for a hearty comfort food option, or try our Mozzarella Stuffed Rosemary Parmesan Soft Pretzels to enjoy a savory snack filled with melty cheese and herbs. You might also like the Easy Marinated Cheese Appetizer with Salami & Green Olives for a flavorful and simple appetizer perfect for gatherings.

Slow Cooker Garlic Butter Steak Bites and More You Gotta Try
Equipment
- 1 Mixing bowl Large
Ingredients
Main Ingredients
- 3 pounds Sirloin steak cut into bite-sized pieces
- 2 teaspoons Kosher salt
- 1 teaspoon Black pepper
- 1 tablespoon Vegetable oil
- 1 small Sweet onion thinly sliced
- 3 cloves Garlic thinly sliced
- 1 cup Unsalted beef stock
- 1 ounce Au jus gravy mix packet
- 4 tablespoons Unsalted butter thinly sliced
Instructions
Instructions
- Season steak pieces with kosher salt and black pepper. Toss to coat.
- Heat oil in a skillet over medium-high heat and sear steak in batches until browned.
- Transfer browned steak to slow cooker.
- Sauté sliced onion and garlic in same skillet 2-3 minutes. Add to slow cooker.
- Pour beef stock into slow cooker and sprinkle au jus gravy mix over contents.
- Top everything with the slices of unsalted butter.
- Cover and cook on low for 4–5 hours or high 2–3 hours until tender.
- Stir before serving. Adjust seasoning with additional salt or pepper if needed.



