Beef Stroganoff Sauce with Meatballs
- Category: Meatballs
- Author: sb
- Rating: 4.87
- Prep time: 20 min
- Cook time: 40 min
Ingredients
- ½ teaspoon vegetable oil, or as needed
- 1 pound ground sirloin
- 3 tablespoons Worcestershire sauce
- 1 egg
- ⅓ cup dry bread crumbs
- ½ small onion, chopped
- salt and ground black pepper to taste
- ¼ cup butter, divided
- 1 (16 ounce) package mushrooms, sliced
- 2 tablespoons all-purpose flour
- 1 (10.5 ounce) can beef broth
- 1 teaspoon ground mustard
- ⅓ cup sour cream