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Crockpot French Onion Meatballs
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Savory Crockpot French Onion Meatballs

These Savory Crockpot French Onion Meatballs are slow cooked in a rich caramelized onion gravy and finished with melted Gruyere cheese. An easy, restaurant-quality comfort food made right in your slow cooker.
Prep Time10 minutes
Cook Time6 hours
Total Time6 hours 10 minutes
Course: Main Course
Cuisine: French-American
Keyword: crockpot french onion meatballs, easy meatball recipe, french onion meatballs, slow cooker meatballs
Servings: 6 servings
Calories: 440kcal
Cost: 3

Equipment

  • slow cooker
  • mandoline slicer
  • mixing bowl
  • measuring cups

Ingredients

  • 2 lbs frozen meatballs (homestyle or Italian)
  • 3 large yellow onions, thinly sliced
  • 3 cups beef broth
  • 1 packet French onion soup mix (1 oz)
  • 3 tbsp butter
  • 2 tbsp Worcestershire sauce
  • 2 cups shredded Gruyere cheese (or Swiss)
  • 2 tbsp cornstarch (optional, for thickening)
  • 2 tbsp water (optional, for slurry)
  • salt and pepper, to taste

Instructions

  • Add sliced onions, beef broth, French onion soup mix, butter, and Worcestershire sauce to the slow cooker. Stir to combine.
  • Add frozen meatballs, nestling them evenly into the onion mixture.
  • Cover and cook on HIGH for 3–4 hours or LOW for 6–8 hours until onions are soft and meatballs are heated through.
  • If a thicker gravy is desired, mix cornstarch and water into a slurry and stir into the slow cooker. Cook on HIGH for 30 minutes.
  • Sprinkle shredded Gruyere cheese over the meatballs, cover, and let melt for 10 minutes.
  • Serve hot once cheese is fully melted.

Notes

Use a mandoline slicer for evenly sliced onions. If using homemade meatballs, brown them first so they hold their shape. For extra-crispy cheese, transfer to an oven-safe dish and broil for a few minutes before serving.