To Bake Meatballs: Prepare meatballs as directed. Bake in foil-lined shallow baking pan in preheated 375°F oven 12 minutes or until cooked through.
To Microwave Sauce: Microwave milk and Sauce Mix in 2-quart microwavable bowl on HIGH 6 minutes or until thickened, stirring halfway through cooking time. Stir in meatballs.
Swedish Meatballs with Mushrooms: After removing cooked meatballs, add 1 cup sliced mushrooms to skillet. Cook and stir 2 minutes or until tender. Remove from skillet. Continue as directed.