Ingredients:
- 1 lb (454g) ground beef (80/20 blend recommended)
- 2 tsp garlic powder
- Salt and freshly ground black pepper to taste
- 2 tbsp Worcestershire sauce
- 1 medium yellow onion, thinly sliced
- 8 oz (227g) fresh cremini mushrooms, sliced
- 2 cups (473ml) low-sodium beef broth
- ¼ cup (60ml) ketchup
- ¼ cup (30g) all-purpose flour
- 2 tablespoons water
- Optional: Pinch of red pepper flakes
Instructions:
- In a large bowl, combine ground beef, garlic powder, salt, pepper, and Worcestershire sauce. Mix gently until just combined.
- Shape the mixture into 4 evenly sized patties. (Optional: Marinate patties in the fridge for 30 minutes).
- Heat a skillet over medium heat. Sauté sliced onions until softened and translucent.
- In the same skillet, brown the patties on both sides for 3-4 minutes per side.
- Transfer the browned patties and sautéed onions to the slow cooker.
- Add beef broth, ketchup, and sliced mushrooms to the slow cooker.
- In a small bowl, whisk together flour and water to create a slurry. Pour the slurry into the slow cooker and stir gently to combine.
- Cover and cook on low for 6-8 hours, or until the patties are tender and the gravy has thickened.
- Serve the Salisbury steak over mashed potatoes or rice, spooning the gravy generously over the top. Garnish with fresh parsley, if desired.