Crock Pot French Onion Meatballs are a delightful dish that combines the rich flavors of caramelized onions and melted cheese over juicy meatballs. This recipe is perfect for various occasions, from game day snacks to comforting family dinners. With minimal prep time and a slow-cooked finish, you’ll find this dish to be both satisfying and simple to prepare.
Why You’ll Love This Recipe
- Effortless Preparation: The slow cooker does all the work, letting you enjoy your time with family or friends.
- Irresistible Flavor: The combination of caramelized onions and savory beef broth creates a mouthwatering sauce.
- Versatile Serving Options: Serve over rice, pasta, or mashed potatoes for a complete meal.
- Crowd-Pleaser: These meatballs are sure to impress guests at any gathering or party.
- Comfort Food Classic: Perfect for chilly evenings when you crave something warm and hearty.
Tools and Preparation
To make your cooking experience as smooth as possible, gather the essential tools before starting. A little preparation goes a long way in ensuring everything runs efficiently.
Essential Tools and Equipment
- 6-quart crock pot
- Mixing bowl
- Whisk
- Measuring cups and spoons
Importance of Each Tool
- 6-quart crock pot: Ideal for cooking larger batches of food, allowing flavors to meld beautifully over time.
- Mixing bowl: Essential for combining ingredients thoroughly before adding them to the crock pot.
- Whisk: Helps achieve a smooth consistency when mixing liquids and dry ingredients together.

Ingredients
For this delicious Crock Pot French Onion Meatballs recipe, gather the following ingredients:
For the Meatballs
- 2 medium yellow onions (sliced)
- 26 ounces frozen meatballs
- 2 cups low-sodium beef broth
- 1 ounce Package brown gravy mix
For Seasoning
- 2 teaspoons garlic (minced)
- 1 teaspoon black pepper
- 1 teaspoon dried thyme
- 1 tablespoon white apple vinegar
For Thickening Sauce
- ¼ cup water
- 2 tablespoons corn starch
For the Topping
- 1½ cups gruyere cheese (grated)
How to Make Crock Pot French Onion Meatballs
Step 1: Prepare the Onions and Meatballs
- Place the sliced onions in the bottom of a 6-quart crock pot.
- Pour the frozen meatballs over the top of the onions.
Step 2: Mix the Sauce Ingredients
- In a medium bowl, combine beef broth, gravy mix, minced garlic, black pepper, dried thyme, and white apple vinegar.
- Whisk until well combined and pour this mixture over the meatballs.
Step 3: Cook in the Crock Pot
- Cover the crock pot and cook on high for 2½-3½ hours or low for 5-6 hours.
Step 4: Thicken the Sauce
- In a small bowl, whisk together cornstarch and water until smooth.
- Pour this mixture over the meatballs in the crock pot and stir gently until well combined.
Step 5: Add Cheese and Serve
- Top with grated gruyere cheese.
- Cook for an additional ten minutes or until the cheese has melted.
- Serve over rice or mashed potatoes, and enjoy!
How to Serve Crock Pot French Onion Meatballs
Crock Pot French Onion Meatballs are versatile and can be enjoyed in various ways. Whether you’re hosting a party or looking for a comforting meal, these meatballs make a delightful dish.
As an Appetizer
- Serve the meatballs with toothpicks for easy snacking. They are perfect for parties and gatherings.
Over Rice or Noodles
- Create a hearty meal by serving the meatballs over steamed rice or your favorite noodles. The broth adds flavor and moisture.
On a Sub Roll
- For a fun twist, place the meatballs on a toasted sub roll. Top with additional cheese and broil until bubbly for a delicious sandwich.
With Mashed Potatoes
- Serve alongside creamy mashed potatoes to soak up all the flavorful broth. This combination makes for a comforting dinner.
How to Perfect Crock Pot French Onion Meatballs
To ensure your Crock Pot French Onion Meatballs turn out perfectly every time, consider these simple tips.
- Use Frozen Meatballs: Opt for frozen meatballs for convenience. They cook evenly and save you time on prep.
- Adjust Seasonings: Feel free to tweak the seasonings according to your taste. Adding herbs like rosemary or oregano can enhance the flavor.
- Choose Low-Sodium Broth: Using low-sodium beef broth helps control the salt level without sacrificing taste.
- Cook Low and Slow: For the best results, cook on low heat. This allows the flavors to meld beautifully.
- Thicken Sauce: If you prefer a thicker sauce, let it simmer longer after adding cornstarch until desired consistency is reached.
Best Side Dishes for Crock Pot French Onion Meatballs
Crock Pot French Onion Meatballs pair well with a variety of side dishes that complement their rich flavors. Here are some excellent options to consider:
- Garlic Bread
A crispy garlic bread is perfect for dipping into the savory sauce. - Steamed Vegetables
Lightly steamed vegetables add freshness and color to your plate while balancing the richness of the meatballs. - Cauliflower Rice
For a low-carb option, serve with cauliflower rice as it absorbs flavors well without overwhelming the dish. - Roasted Brussels Sprouts
These add a nice crunch and are slightly sweet, making them an excellent contrast to the savory meatballs. - Coleslaw
A tangy coleslaw provides crunch and acidity that cuts through the richness of the meatballs. - Quinoa Salad
A refreshing quinoa salad packed with vegetables can provide a light side that pairs well with hearty meatballs. - Baked Sweet Potatoes
Roasted sweet potatoes bring sweetness that complements the savory flavors of the dish beautifully. - Mashed Cauliflower
A great alternative to mashed potatoes, this dish offers creaminess while being lower in carbs.
Common Mistakes to Avoid
When making Crock Pot French Onion Meatballs, it’s important to avoid common pitfalls that can affect the dish’s flavor and texture.
- Skipping the onion layer: Not placing sliced onions at the bottom can lead to uneven cooking. Always start with onions to create a flavorful base.
- Using regular broth: Regular beef broth can be too salty. Opt for low-sodium beef broth to control the saltiness of your dish.
- Ignoring cooking times: Cooking for too long on high can dry out meatballs. Keep an eye on them, especially if using a 6-quart crock pot.
- Not thickening the sauce properly: Forgetting to mix cornstarch with water can result in a watery sauce. Always whisk until smooth before adding it to the meatballs.
- Choosing low-quality cheese: Using inferior cheese may not melt well. Stick with high-quality gruyere cheese for a deliciously gooey topping.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftovers in an airtight container.
- They will keep well for up to 3-4 days in the refrigerator.
Freezing Crock Pot French Onion Meatballs
- Freeze meatballs in a freezer-safe container or zip-top bag.
- They are best used within 2-3 months for optimal flavor.
Reheating Crock Pot French Onion Meatballs
- Oven: Preheat to 350°F (175°C) and place in an oven-safe dish covered with foil for about 20 minutes.
- Microwave: Heat in short intervals of 1-2 minutes, stirring in between until warmed through.
- Stovetop: Simmer on low heat in a pan, stirring occasionally until heated thoroughly.
Frequently Asked Questions
Can I use different types of meat in Crock Pot French Onion Meatballs?
Yes, you can substitute chicken, turkey, or lamb meatballs for beef if desired.
How do I make my own meatballs for this recipe?
You can mix ground beef with breadcrumbs, egg, garlic, and seasonings to form your own meatballs.
Can I prepare Crock Pot French Onion Meatballs ahead of time?
Absolutely! You can assemble everything in the crock pot and refrigerate overnight. Just let it sit at room temperature for a bit before cooking.
What sides pair well with Crock Pot French Onion Meatballs?
Serve them over rice or noodles for a filling meal. A side salad also complements the flavors nicely.
Final Thoughts
Crock Pot French Onion Meatballs are not only delicious but also versatile enough for any occasion. You can easily customize them by adding different spices or toppings based on your preferences. Give this recipe a try and enjoy a comforting meal that’s simple to prepare!
Crock Pot French Onion Meatballs
Indulge in the rich, savory flavors of Crock Pot French Onion Meatballs, a comforting dish that elevates any meal occasion. Tender meatballs are slow-cooked to perfection, nestled atop a bed of caramelized onions and smothered in a delicious beef broth sauce. Topped with gooey melted gruyere cheese, this dish is perfect for family dinners or gatherings with friends. Its effortless preparation allows you to spend more time enjoying the company around you while the crock pot does all the work. Whether served over rice, pasta, or mashed potatoes, these meatballs promise to impress and satisfy with every bite.
- Prep Time: 15 minutes
- Cook Time: High (2½–3½ hours) or Low (5–6 hours)
- Total Time: 0 hours
- Yield: Approximately 8 servings 1x
- Category: Main
- Method: Slow Cooking
- Cuisine: American
Ingredients
- 2 medium yellow onions (sliced)
- 26 ounces frozen beef meatballs
- 2 cups low-sodium beef broth
- 1 ounce brown gravy mix
- 2 teaspoons minced garlic
- 1 teaspoon black pepper
- 1 teaspoon dried thyme
- 1 tablespoon white apple vinegar
- ¼ cup water
- 2 tablespoons cornstarch
- 1½ cups grated gruyere cheese
Instructions
- Place sliced onions in the bottom of a 6-quart crock pot and layer frozen meatballs on top.
- In a mixing bowl, combine beef broth, gravy mix, minced garlic, black pepper, dried thyme, and vinegar. Whisk until smooth and pour over the meatballs.
- Cover and cook on high for 2½-3½ hours or low for 5-6 hours.
- To thicken the sauce, whisk cornstarch with water until smooth, then stir into the crock pot.
- Top with grated cheese and cook for an additional ten minutes until melted. Serve over rice or potatoes.
Nutrition
- Serving Size: 1 meatball with sauce (approximately 90g)
- Calories: 220
- Sugar: 3g
- Sodium: 580mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 16g
- Fiber: 1g
- Protein: 18g
- Cholesterol: 55mg
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