Description
Tender and juicy Slow Cooker French Onion Meatballs simmered in a rich caramelized onion gravy topped with melted cheese. The perfect comfort food for busy weeknights or entertaining.
Ingredients
- 1 (32 oz) bag frozen meatballs (beef or turkey)
- 3 large yellow onions, thinly sliced
- 2 tablespoons butter
- 1 tablespoon olive oil
- 3 cloves garlic, minced
- 3 cups beef broth
- 2 tablespoons Worcestershire sauce
- 1 teaspoon dried thyme (or 1 tablespoon fresh thyme)
- Salt and black pepper, to taste
- 2 cups shredded Gruyère or mozzarella cheese
Instructions
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In a large skillet, melt butter with olive oil over medium heat. Add sliced onions and cook slowly, stirring often, until caramelized and golden brown (about 20 minutes).
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Add garlic and cook for 1–2 minutes until fragrant.
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Place frozen meatballs into the slow cooker.
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Pour in beef broth, Worcestershire sauce, thyme, salt, and pepper. Stir in the caramelized onions.
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Cover and cook on low for 4–6 hours or high for 2–3 hours.
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About 10 minutes before serving, sprinkle shredded cheese on top. Cover and cook until melted.
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Serve hot over mashed potatoes, rice, or with crusty bread.
Notes
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For homemade flavor, use freshly made meatballs instead of frozen.
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Gruyère cheese gives the most authentic French onion flavor, but mozzarella, Swiss, or provolone also work well.
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To prevent onions from burning, cook them low and slow when caramelizing.
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Add a splash of cream at the end for a richer, creamier sauce.
- Leftovers taste even better the next day once the flavors meld together.
- Prep Time: 15 minutes
- Cook Time: 4 hours