Ingredients:

1 lb ground beef
1 packet French onion soup mix
1/2 cup breadcrumbs
1/4 cup milk
1 egg
1/2 cup grated Parmesan cheese
2 tablespoons olive oil
2 large onions, thinly sliced
2 cups beef broth
1 tablespoon Worcestershire sauce
Salt and pepper to taste
Fresh thyme for garnish

Directions:

1. Prepare Meatball Mixture:

In a large bowl, mix the ground beef, French onion soup mix, breadcrumbs, milk, egg, and Parmesan cheese until well combined.
Form the mixture into meatballs.
2. Brown Meatballs:

In a skillet over medium heat, heat the olive oil.
Add the meatballs and brown them on all sides. Once browned, transfer the meatballs to the slow cooker.
3. Caramelize Onions:

In the same skillet, add the sliced onions.
Cook until the onions are golden brown and caramelized, about 10-15 minutes.
Add the caramelized onions on top of the meatballs in the slow cooker.
4. Make Gravy:

In a bowl, mix the beef broth and Worcestershire sauce.
Pour the mixture over the meatballs and onions in the slow cooker.
5. Cook:

Set the slow cooker on low for 6-8 hours or on high for 3-4 hours.
Adjust seasoning with salt and pepper as needed.
6. Garnish and Serve:

Before serving, garnish with fresh thyme.
Enjoy the meatballs hot!
Additional Information:
Prep Time: 20 minutes
Cook Time: 6-8 hours (low) or 3-4 hours (high)
Total Time: About 7-9 hours
Servings: 4-6