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Crockpot French Onion Meatballs

These slow cooker French onion meatballs are rich, savory, and irresistibly comforting. Made with tender meatballs, caramelized onions, and a deep, flavorful broth, then finished with melted Gruyère cheese, they’re perfect for cozy dinners or effortless entertaining.
Print Recipe
Prep Time 5 minutes
Cook Time 4 hours
Total Time 4 hours 5 minutes
Servings: 6 servings
Course: Appetizer, Comfort Food, Dinner, Holiday, Slow Cooker
Cuisine: American, French-Inspired
Calories: 380
Ingredients Method Notes

Ingredients
  

  • 26 oz frozen beef meatballs
  • 1 yellow onion thinly sliced
  • 2 cans French onion soup 10.5 oz each
  • 1 cup Gruyère cheese shredded

Method
 

  1. Place frozen meatballs in the slow cooker.
  2. Add sliced onions and pour in French onion soup. Stir gently to coat.
  3. Cover and cook on LOW for 3–4 hours or HIGH for 1–2 hours, stirring occasionally.
  4. Sprinkle Gruyère cheese over the top during the last 15–30 minutes and let melt.
  5. Serve hot over mashed potatoes, bread, rice, or in slider rolls.

Notes

For best flavor, use freshly grated Gruyère for smooth melting. Stir occasionally to keep the sauce glossy and prevent sticking.