Slow Cooker French Onion Meatballs: A Comforting, Savory Delight

Prepare the Meatballs – In a large bowl, combine ground beef, breadcrumbs, Parmesan cheese, egg, garlic powder, onion powder, salt, and pepper. Mix until well combined, then shape into meatballs (about 1 inch in diameter).
Brown the Meatballs – Heat olive oil in a skillet over medium heat. Brown the meatballs in batches for about 2-3 minutes per side, just until they develop a golden crust. Transfer the browned meatballs to the slow cooker.
Prepare the Sauce – In the same skillet, pour in the French onion soup, beef broth, Worcestershire sauce, thyme, and rosemary. Stir to combine, scraping any bits left in the skillet from browning the meatballs.
Slow Cook – Pour the sauce over the meatballs in the slow cooker. Cover and cook on low for 4-6 hours or high for 2-3 hours, until the meatballs are fully cooked and tender.
Optional Cheese Topping – About 15 minutes before serving, sprinkle shredded mozzarella or Gruyère cheese over the meatballs, then cover and let it melt.
Serve and Enjoy – Once the cheese has melted, serve the meatballs hot, with the delicious French onion gravy spooned over them.
Serving and Storage Tips