In a large bowl, combine ground beef, egg yolks, tomato paste, mustard, Worcester sauce, gluten free breadcrumbs; season with salt, pepper and garlic powder. Using your clean hands, mix well and shape meatballs. You should get about 20 meatballs.
Melt 2 Tbsp butter in a large skillet over medium heat. Add meatballs to skillet in two batches and cook on all 4 sides for about 2 minutes per side. Add more butter if needed. Remove meatballs from the skillet and set aside on a paper towel-lined plate.
Add the remaining 2 Tbsp butter in the skillet. Add onion and mushrooms to the skillet, and cook until vegetables are soft, for about 3 minutes.
In a small bowl, mix together 1/2 cup beef broth and arrowroot starch. In the skillet, whisk in remaining 1 cup beef broth, Worcester sauce, and tomato paste until well combined, about 1-2 minutes. Bring to a boil, reduce heat to simmer and stir in arrowroot starch mixture. Cook until the sauce has thickened, about 1-2 minutes. Add more beef broth as needed until desired consistency is reached. Stir in meatballs.
Serve warm over egg noodles, mashed potatoes or mashed cauliflower, garnished with parsley, if desired.
NUTRITION
Nutrition Facts
Salisbury Steak Meatballs with Mushroom Gravy
Amount Per Serving (232 g)
Calories 307Calories from Fat 135
% Daily Value*
Fat 15g23%
Saturated Fat 7.4g37%
Polyunsaturated Fat 7.6g
Cholesterol 158mg53%
Sodium 602mg25%
Carbohydrates 14.1g5%
Fiber 1.5g6%
Sugar 3g3%
Protein 28g56%
* Percent Daily Values are based on a 2000 calorie diet.