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Beef Stroganoff Sauce with Meatballs

by sb in Meatballs

Rating

★ 4.9

Prep

20 min

Cook

40 min

Total

1 h

Ingredients

13 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