Ingredients
Scale
For the Meatballs:
- 1 pound (450g) ground beef
- 1/2 cup breadcrumbs (plain or seasoned)
- 1/4 cup grated Parmesan cheese
- 1 egg, lightly beaten
- 2 cloves garlic, minced
- 1 teaspoon dried parsley
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
For the French Onion Sauce:
- 2 large yellow onions, thinly sliced
- 3 tablespoons unsalted butter
- 1 tablespoon olive oil
- 3 cups beef broth
- 1 tablespoon Worcestershire sauce
- 1 teaspoon balsamic vinegar
- 1 teaspoon dried thyme
- 2 tablespoons all-purpose flour (optional, for thickening)
- 1 cup shredded Gruyère or Swiss cheese
Instructions
Step 1: Prepare the Meatballs
- In a large mixing bowl, combine ground beef, breadcrumbs, Parmesan cheese, egg, minced garlic, parsley, salt, and pepper.
- Mix until all ingredients are well incorporated but do not overwork the mixture.
- Roll the mixture into 1-inch meatballs and set them aside on a tray.
Step 2: Sear the Meatballs
- Heat a skillet over medium heat and lightly coat it with olive oil.
- Sear the meatballs for 2-3 minutes on each side until browned. (They don’t need to be fully cooked as they will finish cooking in the crock pot.)
Step 3: Caramelize the Onions
- In the same skillet, melt butter and olive oil over medium heat.
- Add sliced onions and cook, stirring occasionally, until they become golden brown and caramelized, about 15-20 minutes.
- Sprinkle with flour (if thickening the sauce) and stir to coat the onions.
Step 4: Assemble in the Crock Pot
- Transfer the caramelized onions to the crock pot.
- Place the seared meatballs on top of the onions.
- Add beef broth, Worcestershire sauce, balsamic vinegar, and dried thyme. Stir gently to combine.
Step 5: Cook in the Crock Pot
- Cover and cook on low for 6-8 hours or on high for 3-4 hours.
- During the last 30 minutes of cooking, sprinkle shredded Gruyère or Swiss cheese over the meatballs. Allow it to melt completely before serving.
Notes
- Searing the meatballs before slow cooking adds a caramelized crust and locks in moisture, enhancing the flavor.
- For a thicker sauce, use the optional flour or mix a cornstarch slurry and stir it into the crock pot during the last hour of cooking
- Prep Time: 20 minutes
- Cook Time: 6-8 hours (low) or 3-4 hours (high
Nutrition
- Calories: 320
- Sodium: 680mg
- Protein: 22g