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Crockpot Easy French Onion Meatballs topped with melted cheese and served in onion broth.

French Onion Meatballs

A cozy, hassle-free crockpot recipe that brings the deep flavors of French onion soup combined with tender meatballs, perfect for serving with bread or mashed potatoes.
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Prep Time 10 minutes
Cook Time 6 hours
Total Time 6 hours 10 minutes
Servings: 6 servings
Course: Dinner, Main Course
Cuisine: Comfort Food, French
Calories: 350
Ingredients Method Notes

Ingredients
  

Meatballs
  • 1 large onion, thinly sliced Or 2 medium onions.
  • 2-3 cloves garlic, minced
  • 2 cups beef broth Use low sodium if needed.
  • 1 packet French onion soup mix Or your favorite brand.
  • 1 tablespoon Worcestershire sauce
  • 1 tablespoon butter Optional, helps the onions feel richer.
  • 1-2 tablespoons cornstarch Plus a little water, only if you want a thicker sauce.
  • Cheese for topping: provolone, Swiss, or gruyere

Method
 

Preparation
  1. If you have five extra minutes, quickly cook the sliced onions in a skillet with butter until they soften a bit. This step is optional.
  2. Add onions and garlic to the crockpot. Pour in beef broth, then stir in the French onion soup mix and Worcestershire sauce.
  3. Add your meatballs, separating them as best you can if they're frozen.
  4. Cook on LOW for 4 to 6 hours or HIGH for 2 to 3 hours, until hot and bubbly.
  5. If you want a thicker sauce, mix cornstarch with a splash of cold water and stir in during the last 20 minutes.
  6. Top with cheese, cover for 5 to 10 minutes until melted, and serve.

Notes

These meatballs are forgiving and can be made ahead of time. Ideal for busy weeknights. Serve with mashe potatoes, egg noodles, or toasted rolls.