Description
These Crock Pot French Onion Meatballs are a comforting and flavorful dish featuring tender frozen meatballs slow-cooked with caramelized sweet onions, savory garlic, and a rich French onion soup-based sauce. The melted Gruyere cheese on top adds a deliciously creamy, cheesy finish. Perfect as an appetizer or served over mashed potatoes or egg noodles for a hearty meal.
Ingredients
Scale
Meatballs
- 36 ounces frozen meatballs
Vegetables
- 2 large sweet onions, thinly sliced into half moons
- 3–5 garlic cloves, minced
Liquids & Sauces
- 2 cups low sodium beef broth
- 1 (10.5 oz) can condensed French onion soup
- 1 tablespoon balsamic vinegar
Seasonings
- 1 ½ teaspoons fresh thyme, minced
- ¾ teaspoon black pepper, or to taste
- 2 tablespoons cornstarch
Toppings & Garnish
- 1 cup shredded Gruyere cheese
- Fresh thyme or parsley, chopped (optional, for garnish)
Instructions
- Prepare the crockpot: Place the frozen meatballs evenly in the bottom of the crockpot to form a base layer.
- Add onions and garlic: Top the meatballs with the thinly sliced sweet onions and minced garlic, evenly distributing them across the surface.
- Make the sauce: In a mixing bowl or large measuring cup, whisk together the beef broth, condensed French onion soup, balsamic vinegar, minced thyme, black pepper, and cornstarch until well combined and smooth.
- Combine ingredients: Pour the prepared sauce mixture evenly over the meatballs, onions, and garlic in the crockpot.
- Cook: Cover the crockpot with the lid and cook on LOW for 3 to 5 hours, stirring halfway through the cooking time to ensure even heating and to prevent the sauce from sticking or burning on the bottom.
- Add cheese: Shortly before serving, sprinkle the shredded Gruyere cheese over the top of the meatballs. Cover and cook for an additional 5 to 10 minutes, or until the cheese is melted and bubbly.
- Garnish and serve: Garnish with fresh chopped parsley or thyme if desired. Serve warm, either as a savory appetizer or over mashed potatoes or egg noodles for a complete meal. Enjoy!
Notes
- Stir halfway through cooking to prevent the sauce from burning on the bottom and to ensure even heating of meatballs.
- Adjust the amount of black pepper to taste for a milder or stronger flavor.
- Use low sodium beef broth to control salt content and balance the salty flavors of the condensed soup.
- Gruyere cheese can be substituted with Swiss or mozzarella if desired.
- For a thicker sauce, increase cornstarch slightly; for a thinner sauce, reduce cornstarch or add more broth.
- Fresh thyme is preferred for best flavor, but dried thyme can be used in smaller amounts.
- Prep Time: 10 minutes
- Cook Time: 3 to 5 hours
- Category: Appetizer, Main Dish
- Method: Slow Cooking
- Cuisine: American
Keywords: crockpot meatballs, french onion meatballs, slow cooker recipes, melted cheese meatballs, easy party appetizers
