Why This Recipe Is a Keeper
Before we dive into the method, here is why these steakhouse burgers will become a favorite.
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Only 5 ingredients. Simple and affordable.
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No thawing required. Frozen patties go straight into the slow cooker.
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Set it and forget it. The slow cooker does all the work.
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Juicy and saucy. Rich, satisfying, and delicious.
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Crowd-pleasing. Everyone loves burgers.
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Budget-friendly. Frozen patties, onions, and mushrooms are inexpensive.
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Perfect for busy weeknights and game days.
Ingredients
Servings: 6
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6 frozen beef burger patties (about 1/3 lb each, 80–85% lean)
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1 cup bottled steak sauce (such as A.1. or your favorite brand)
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1 large yellow onion, thinly sliced
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8 ounces sliced mushrooms (fresh or canned, drained)
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6 hamburger buns, for serving
Ingredient Notes
Frozen patties: Use frozen beef burger patties. Do not thaw them.
Steak sauce: Use bottled steak sauce.
Onion: Use a large yellow onion. Slice it thinly.
Mushrooms: Use fresh or canned sliced mushrooms.
Buns: Use hamburger buns for serving.
Step-by-Step Instructions
Step 1: Prepare the Slow Cooker
Lightly spray the inside of the slow cooker with nonstick cooking spray.
Step 2: Layer the Onions
Scatter the sliced onion evenly across the bottom of the slow cooker.
Step 3: Add the Patties
Lay the frozen beef patties in a single layer over the onions.
Step 4: Add the Mushrooms
Sprinkle the sliced mushrooms over and around the frozen patties.
Step 5: Add the Steak Sauce
Pour the steak sauce slowly and evenly over the frozen beef patties, onions, and mushrooms.
Step 6: Slow Cook
Cover and cook on LOW for 5 to 6 hours, or on HIGH for 3 to 3 1/2 hours, until the burgers are fully cooked and reach 160°F (71°C).
Step 7: Serve
Carefully remove the burgers from the slow cooker. Stir the onions and mushrooms into the remaining sauce. Toast the buns if desired. Place a patty on each bun and spoon the saucy onions and mushrooms over the top.
How to Serve Steakhouse Burgers
These juicy, saucy burgers are delicious on their own, but a few accompaniments make them even better.
With Fries: Classic burger pairing.
With a Green Salad: A simple salad cuts through the richness.
With Coleslaw: Cool, creamy coleslaw balances the flavors.
With Pickles: Tangy pickles add brightness.
With Cheese: Add a slice of cheese.
Variations & Tips
Make Them with Turkey Patties: Use frozen turkey burger patties.
Make Them with Different Sauce: Use barbecue sauce or Worcestershire sauce.
Make Them with Peppers: Add sliced bell peppers.
Make Them with Garlic: Add minced garlic.
Make Them with Herbs: Add thyme or parsley.
Make Them with Onion: Add extra onions.
Make Them with Cheese: Add cheese on top.
Make Them Gluten-Free: Use gluten-free buns.
Make Them in a Skillet: Cook on the stovetop.
Pro Tips for Absolute Success
Do not thaw the patties. They cook perfectly from frozen.
Do not lift the lid during cooking. This traps the heat and steam.
Toast the buns. This prevents sogginess.
Spoon the sauce over the burgers before serving.
Frequently Asked Questions
Can I use a different meat?
Yes. Turkey or chicken patties can be used.
Can I use a different sauce?
Yes. Barbecue or Worcestershire sauce can be used.
Can I use a different onion?
Yes. Red or white onion can be used.
Can I make this ahead of time?
Yes. Reheat before serving.
Can I freeze this dish?
Yes. Freeze in an airtight container for up to 3 months.
How long do leftovers last?
Store in the refrigerator for up to 4 days.
Why are my patties dry?
You overcooked them. Check the temperature early.
Why is my sauce thin?
The meat released too much moisture. Let it rest.
Can I add more vegetables?
Yes. Add peppers or mushrooms.
Can I use a different pan?
This recipe is designed for a slow cooker.
The Beauty of Slow Cooker Burgers
There is something deeply satisfying about a warm, juicy burger that comes together with almost no effort. It is the kind of food that makes people happy. These steakhouse burgers are a celebration of all those things.
Keep frozen patties in your freezer. Keep steak sauce, onions, and mushrooms in your pantry and fridge. This recipe is the reason why.
Recipe Card
Prep Time: 10 minutes
Cook Time: 5 to 6 hours on LOW or 3 to 3 1/2 hours on HIGH
Total Time: Approximately 5 to 6 hours
Yield: 6 servings