Slow Cooker Salisbury Steak with Mushrooms & Onion Gravy

Serves: 4–6
Prep time: 20 minutes
Cook time: 6–8 hours (low) or 3–4 hours (high)

🛒 Ingredients

Salisbury Steak Patties

2 lbs ground beef (80/20 preferred)
½ cup breadcrumbs or panko
1 packet onion soup mix (or see homemade version below)
1 egg
2 tbsp Worcestershire sauce
1 tsp garlic powder
½ tsp black pepper
½ tsp salt (optional—soup mix is salty)

Mushroom Gravy

2 cups sliced mushrooms (white or cremini)
1 medium onion, sliced (optional but recommended)
2 cups beef broth
2 tbsp Worcestershire sauce
1 tbsp soy sauce (adds depth)
1 tsp garlic powder
½ tsp onion powder
½ tsp paprika
¼ tsp black pepper

To Thicken (added at the end)

3 tbsp cornstarch
3 tbsp cold water

🔪 Instructions

1️⃣ Make the Patties

In a large bowl, combine:
- Ground beef
- Breadcrumbs
- Onion soup mix
- Egg
- Worcestershire
- Garlic powder & pepper
Mix gently (don’t overwork or patties get tough).
Form into 4–6 oval patties, about ¾-inch thick.

2️⃣ Optional but Recommended: Brown the Patties

This adds flavor but can be skipped if you’re short on time.

Heat a skillet over medium-high with a little oil.
Sear patties 1–2 minutes per side until browned (not cooked through).
Transfer to slow cooker.

3️⃣ Layer the Slow Cooker

Place mushrooms and onions in the bottom of the crockpot.
Lay patties on top.
Sprinkle extra mushrooms over the patties (like in the image).

4️⃣ Make the Gravy

In a bowl, whisk together:

Beef broth
Worcestershire sauce
Soy sauce
Garlic powder
Onion powder
Paprika
Black pepper

Pour evenly over patties.

5️⃣ Slow Cook

LOW: 6–8 hours
HIGH: 3–4 hours

Patties will be ultra-tender and swimming in gravy.

6️⃣ Thicken the Gravy

Mix cornstarch + cold water.
Stir into slow cooker.
Cover and cook 15–20 minutes on HIGH, until thickened.

🍽️ Serve With

Mashed potatoes 🥔 (classic)
Egg noodles
Rice
Buttered green beans or peas

Spoon lots of gravy over everything.

✨ Pro Tips

Don’t stack patties too tightly—overlapping is fine.
For richer gravy, stir in 2 tbsp sour cream at the end.
Ground turkey works, but add 1–2 tbsp olive oil for moisture.
Leftovers are even better the next day.

🧅 Homemade Onion Soup Mix (Optional)

If skipping the packet:

3 tbsp dried minced onion
1 tsp onion powder
½ tsp garlic powder
½ tsp sugar
½ tsp salt
¼ tsp black pepper