Step 1: Making the Meatball Mixture
In a large mixing bowl, combine the ground beef, ground pork, breadcrumbs, Parmesan cheese, milk, egg, finely chopped onion, minced garlic, Worcestershire sauce, dried thyme, dried parsley, salt, and black pepper. Use your hands to mix everything together until well combined. Be careful not to overmix, as this can make the meatballs tough.
Step 2: Shaping the Meatballs
Using a small cookie scoop or your hands, form the meat mixture into 1-inch meatballs. Place them on a baking sheet lined with parchment paper. This recipe should yield about 24 meatballs.
Step 3: Browning the Meatballs
In a large skillet, heat a tablespoon of olive oil over medium-high heat. Working in batches, add the meatballs to the skillet and brown them on all sides. This step adds flavor and helps the meatballs hold their shape during slow cooking. Once browned, transfer the meatballs to the slow cooker.
Making the French Onion Sauce
Step 4: Sautéing the Onions
In the same skillet used for the meatballs, add the butter and olive oil. Once the butter has melted, add the sliced onions. Cook over medium heat, stirring occasionally, until the onions are caramelized and golden brown, about 20-25 minutes. This slow caramelization process is key to developing the rich, sweet flavor of the onions.
Step 5: Adding Garlic and Deglazing the Pan
Once the onions are caramelized, add the minced garlic and cook for another minute until fragrant. Add the Worcestershire sauce and balsamic vinegar to the skillet, scraping up any browned bits from the bottom of the pan. This deglazing step incorporates all those flavorful bits into the sauce.
Step 6: Preparing the Sauce
Add the beef broth, dried thyme, and dried rosemary to the skillet. Stir to combine and bring the mixture to a simmer. Taste and adjust the seasoning with salt and pepper as needed.
Slow Cooking the Meatballs
Step 7: Combining Everything in the Slow Cooker
Pour the French onion sauce over the browned meatballs in the slow cooker. Make sure the meatballs are fully submerged in the sauce. Cover and cook on low for 6-8 hours or on high for 3-4 hours. The slow cooker will meld the flavors together beautifully, resulting in tender meatballs and a rich, flavorful sauce.
Step 8: Adding the Cheese
About 30 minutes before serving, sprinkle the shredded Gruyere or Swiss cheese over the meatballs. Cover and continue cooking until the cheese is melted and bubbly. This cheesy topping adds the perfect finishing touch, reminiscent of the cheesy crust on French onion soup.
Serving the Meatballs
Step 9: Garnishing and Serving
Once the meatballs are cooked and the cheese is melted, it’s time to serve. Garnish with freshly chopped parsley for a pop of color and freshness. These meatballs are delicious on their own, but you can also serve them over a bed of creamy mashed potatoes or with crusty bread to soak up the sauce.
Step 10: Enjoying the Meal
Gather your family or friends around the table and dig into this comforting, flavorful dish. Each bite offers a delightful combination of tender meatballs, savory onion sauce, and gooey melted cheese. It’s the perfect meal for a cozy night in or a special gathering.
Tips and Tricks for Perfect Meatballs
Choosing the Right Meat
Using a combination of ground beef and pork adds depth of flavor and ensures the meatballs are juicy and tender. If you prefer, you can use all beef or substitute with ground turkey or chicken for a lighter option.
Caramelizing the Onions
Take your time when caramelizing the onions. This slow process is essential for developing the rich, sweet flavor that defines French onion soup. Don’t rush it; the deep golden color and complex flavor are worth the extra time.
Balancing the Flavors
The combination of Worcestershire sauce and balsamic vinegar in the sauce adds a wonderful depth of flavor and a touch of acidity to balance the sweetness of the caramelized onions. Adjust the seasoning to your taste, adding more salt, pepper, or even a splash more vinegar if desired.
Serving Suggestions
These meatballs are incredibly versatile. Serve them over mashed potatoes, egg noodles, or rice for a hearty meal. For a lighter option, pair them with a fresh green salad or steamed vegetables. The rich sauce also makes them perfect for serving with crusty bread, ideal for soaking up every last drop.
Conclusion
Slow Cooker French Onion Meatballs are a delightful twist on a classic comfort food, combining the beloved flavors of French onion soup with tender, savory meatballs. This detailed guide ensures you can create this delicious dish with ease, perfect for any occasion. Whether you’re cooking for a family dinner or entertaining guests, these meatballs are sure to impress with their rich flavors and satisfying textures.
So, gather your ingredients, follow these steps, and enjoy the comforting, flavorful goodness of homemade French Onion Meatballs. Happy cooking, and bon appétit!