Slow Cooker Salisbury Steak (High-Protein)

This Slow Cooker Salisbury Steak is a hearty, protein-packed comfort food recipe that transforms lean ground beef into tender, flavorful patties simmered in a rich onion and mushroom gravy. Made with wholesome ingredients and cooked low and slow, this healthier version delivers all the classic flavor of traditional Salisbury steak while keeping the dish lighter and higher in protein.

Perfect for meal prep, busy weeknights, or a satisfying family dinner, this easy slow cooker recipe requires minimal hands-on time and delivers maximum flavor.

Prep Time: 15 minutes
Cook Time: 4–6 hours
Total Time: 4–6 hours 15 minutes
Servings: 4–6

Ingredients

For the Salisbury Steak Patties

• 500–700 g lean ground beef (90–95% lean)
• 1/3 cup oat flour or breadcrumbs
• 1 large egg
• 1 tablespoon Worcestershire sauce
• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1/2 teaspoon black pepper
• 1/2 teaspoon salt
• 1 tablespoon fresh parsley, chopped (optional)

For the Mushroom Onion Gravy

• 1 medium onion, thinly sliced
• 200–250 g mushrooms, sliced
• 2 cups low-sodium beef broth
• 2 tablespoons Worcestershire sauce
• 1 tablespoon tomato paste
• 2 cloves garlic, minced
• Salt and black pepper to taste

For Thickening

• 2 teaspoons cornstarch
• 2 tablespoons cold water

Instructions

Step 1: Prepare the Salisbury Steak Patties

In a large mixing bowl, combine:

• Lean ground beef
• Oat flour or breadcrumbs
• Egg
• Worcestershire sauce
• Garlic powder
• Onion powder
• Salt
• Black pepper
• Parsley (if using)

Mix gently until just combined. Avoid overmixing, which can make the patties dense.

Form the mixture into 4 to 6 oval-shaped patties.

Step 2: Optional Searing for Extra Flavor

For a deeper, richer flavor, heat a skillet over medium-high heat and lightly brown the patties for 1 to 2 minutes per side.

This step is optional but adds additional texture and enhances the overall flavor of the dish.

Step 3: Prepare the Slow Cooker

Spread the sliced onions and mushrooms evenly across the bottom of the slow cooker.

Place the Salisbury steak patties on top.

Step 4: Make the Gravy

In a medium bowl, whisk together:

• Beef broth
• Worcestershire sauce
• Tomato paste
• Minced garlic

Pour the mixture evenly over the patties.

Season lightly with salt and pepper.

Step 5: Slow Cook

Cover and cook:

• Low: 6–7 hours
• High: 3–4 hours

The patties should be tender and fully cooked through.

Step 6: Thicken the Gravy

About 20 minutes before serving, mix the cornstarch and cold water together to create a slurry.

Stir the slurry into the slow cooker gravy.

Cover and continue cooking until the gravy thickens.

Step 7: Serve

Carefully transfer the Salisbury steak patties to serving plates.

Spoon the rich mushroom onion gravy over the top and serve hot.

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