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These French Onion Meatballs are the ultimate dump-and-go dinner, with frozen meatballs and sweet onions slow-cooked in a rich, savory French onion gravy until everything is fork-tender. I throw these together on a busy weeknight and let the crock do all the work, then pile them over egg noodles for a meal the whole family inhales, just like our meatballs and gravy.
Just dump everything into the slow cooker, give it a stir, and come back to the coziest comfort food dinner.
French Onion Meatballs Quick Look
- 🕒 Prep Time: 10 minutes
- 🌡️ Cook Time: 6 hours
- ⏳ Total Time: 6 hours 10 minutes
- 🍽️ Serving: 4 servings
- ⚡ Calories: 562kcal
- 🌶️ Flavor Profile: Savory, rich, oniony, and beefy
- ✋ Difficulty: Easy, as simple as our Salisbury steak
Quick Answer
To make French onion meatballs, add a bag of frozen meatballs and sliced sweet onions to an 8-quart slow cooker, then stir in tomato sauce, Worcestershire sauce, Dijon mustard, oregano, onion powder, garlic, salt, pepper, and beef broth. Whisk a brown gravy packet with water until smooth and pour it over the top. Stir everything together, cover, and cook on low for 4 to 6 hours or high for 3 to 4 hours. Serve the meatballs and onions over egg noodles or mashed potatoes with extra gravy spooned on top.
Jump to:
- French Onion Meatballs Quick Look
- Quick Answer
- Why This Recipe Works
- Why You’ll Love This Recipe
- Key Ingredients
- Variations and Substitutions
- How to Make French Onion Meatballs
- Recipe Tips & Tricks
- Serving Ideas and Suggestions
- French Onion Meatballs FAQs
- Other Recommended Slow Cooker Beef Recipes
- French Onion Meatballs
Why This Recipe Works
Click to see the technique science
- Frozen meatballs make it effortless. There is no rolling or browning, you start with a bag of frozen meatballs and let the slow cooker do everything.
- Real onions, not just soup mix. Two sliced sweet onions melt down into the gravy for that deep, caramelized French onion flavor.
- The gravy is rich and savory. Beef broth, tomato sauce, Worcestershire, Dijon, and a gravy packet build a thick, glossy sauce that clings to every meatball.
- Total dump-and-go dinner. Everything goes in at once, so prep is just a few minutes before the crock takes over.
- Feeds the family over anything. Pile it over egg noodles, mashed potatoes, or rice for a hearty, crowd-pleasing meal.
- Great for busy weeknights. Set it before work or errands and come home to dinner that is already done.
Why You’ll Love This Recipe
- Frozen meatballs and a slow cooker mean almost zero hands-on work.
- The French onion gravy is rich, savory, and packed with melted sweet onions.
- It is hearty comfort food the whole family loves, just like our slow cooker Mississippi beef.
Key Ingredients
A handful of pantry staples and a bag of frozen meatballs are all you need for this easy slow cooker dinner.
- Frozen meatballs: The shortcut star, no rolling or browning needed. Use a 26-ounce bag of your favorite beef or Italian-style meatballs.
- Sweet onions: Two onions cut into rings slowly melt into the gravy for that classic French onion flavor.
- Beef broth and brown gravy packet: Together they create a rich, savory, thickened gravy that coats every meatball.
- Tomato sauce, Worcestershire, and Dijon: This savory trio adds depth, tang, and a little richness to the sauce.
- Garlic and seasonings: Garlic, onion powder, oregano, salt, and pepper round out the cozy, beefy flavor.
See recipe card for exact quantities.
Variations and Substitutions
Make these French onion meatballs your own with a few easy swaps.
- Add cheese: Sprinkle shredded provolone, mozzarella, or Swiss over the top in the last 20 minutes for a true French onion vibe.
- Use homemade meatballs: Swap the frozen bag for a batch of our homemade meatballs if you have extra time.
- Make it on the stovetop: Simmer everything in a covered Dutch oven over low heat for about 45 minutes instead of the crock.
- Thicken it more: Stir in a cornstarch slurry at the end if you like an extra-thick gravy.
- Add mushrooms: Toss in sliced mushrooms with the onions for an even heartier, savory sauce.
How to Make French Onion Meatballs
- Add the frozen meatballs, sliced onions, tomato sauce, Worcestershire, Dijon, oregano, onion powder, garlic, salt, pepper, and beef broth to an 8-quart slow cooker.
- Whisk the brown gravy packet with 5 tablespoons of water until dissolved, then pour it over the meatballs.
- Stir everything together, cover, and cook on low for 4 to 6 hours or high for 3 to 4 hours, stirring once or twice if you can.
- Once the onions are tender and the gravy is rich, serve the meatballs over egg noodles or mashed potatoes.
Recipe Tips & Tricks
- Cut the onions into even rings so they soften at the same rate and melt smoothly into the gravy.
- Dissolve the gravy packet fully in water before adding it, this prevents clumps and gives you a silky sauce.
- Do not lift the lid too often, every peek lets out heat and adds cooking time.
- Serve it over something starchy like egg noodles, rice, or our loaded mashed potato cakes to soak up all that gravy.
- Add cheese at the end if you want that melty French onion soup feel, broil briefly to bubble it.
- Stir once or twice during cooking to keep the meatballs coated and the gravy evenly thickened.
Serving Ideas and Suggestions
These French onion meatballs are pure comfort food, so serve them piled high over buttered egg noodles, creamy mashed potatoes, or fluffy white rice with plenty of the savory gravy spooned over the top. They also make an irresistible party appetizer kept warm in the crock with toothpicks. For another cozy beef dinner, try our creamy stroganoff.
Round out the plate with a simple green salad, steamed green beans, or roasted vegetables to balance the rich gravy. A few slices of crusty bread are perfect for mopping up every last bit.
Leftovers keep beautifully in the fridge for up to 4 days and reheat gently on the stovetop or in the microwave with a splash of broth. For another dump-and-go favorite, make our slow cooker Mississippi beef next.
French Onion Meatballs FAQs
Absolutely. While frozen meatballs make this a true dump-and-go dinner, you can use a batch of homemade meatballs if you prefer. Brown them lightly first so they hold their shape, then add them to the slow cooker with the onions and gravy. The cook time stays about the same, just make sure they reach a safe internal temperature.
French onion meatballs are best served over something that soaks up the rich gravy, like buttered egg noodles, mashed potatoes, or rice. A green salad, steamed vegetables, or crusty bread on the side rounds out the meal. They also work great as a party appetizer served straight from the slow cooker with toothpicks.
Yes. Add all the ingredients to a large covered Dutch oven or deep skillet and simmer over low heat for about 45 minutes to an hour, stirring occasionally, until the onions are tender and the gravy has thickened. Keep the heat low so the sauce does not scorch on the bottom.
Store leftover French onion meatballs in an airtight container in the refrigerator for up to 4 days. Reheat them gently on the stovetop or in the microwave with a splash of beef broth to loosen the gravy. They also freeze well for up to 3 months, just thaw overnight in the fridge before reheating.
Yes, and it makes them taste even more like French onion soup. Sprinkle shredded provolone, Swiss, or mozzarella over the meatballs during the last 20 minutes of cooking, or transfer them to a baking dish, top with cheese, and broil until melted and bubbly. The melty cheese with the oniony gravy is irresistible.
If the gravy is thinner than you like, stir in a cornstarch slurry made from 1 tablespoon cornstarch whisked with 2 tablespoons cold water during the last 30 minutes, then let it cook uncovered to thicken. Make sure you dissolved the gravy packet fully at the start, and avoid adding extra broth beyond what the recipe calls for.
Craving more cozy comfort food? Try our classic Salisbury steak next for another savory, gravy-smothered dinner.
French Onion Meatballs
Equipment
Ingredients
- 26 ounce bag of frozen meatballs
- 2 medium sweet onions cut into rings
- 2 tablespoons tomato sauce
- 2 tablespoons Worcestershire sauce
- 1 tablespoon Dijon mustard
- 1 teaspoon dried oregano
- 1 teaspoon onion powder
- 3 cloves garlic minced
- 1 teaspoon salt
- 1 teaspoon black pepper
- 1 & 1/2 cups beef broth
- 1 brown gravy packet
- 5 tablespoons water
Instructions
- Add the frozen meatballs, onions, tomato sauce, Worcestershire sauce, dijon mustard, oregano, onion powder, garlic, salt, pepper, and beef broth to an 8-quart slow cooker.26 ounce bag of frozen meatballs, 2 medium sweet onions, 2 tablespoons tomato sauce, 2 tablespoons Worcestershire sauce, 1 tablespoon Dijon mustard, 1 teaspoon dried oregano, 1 teaspoon onion powder, 3 cloves garlic, 1 teaspoon salt, 1 teaspoon black pepper, 1 & 1/2 cups beef broth
- Mix the gravy packet with 5 tablespoons of water until dissolved. Pour into the slow cooker.1 brown gravy packet, 5 tablespoons water
- Stir everything together and put the lid on for 4-6 hours on low or 3-4 hours on high, stirring here and there. Once done, serve on top of egg noodles or mashed potatoes!
Notes
- Brown the cooked meatballs in a large skillet with a little oil for extra flavor before slow cooking.
- Use a wooden spoon to mix the ingredients gently in the crock pot.
- Slice the onions to a medium thickness so they don’t melt into the sauce.
- Stir the mixture occasionally during cooking.
- Thicken the sauce with a flour-water mixture or water and cornstarch if needed.
- Let the meatballs rest a few minutes after cooking to soak up more flavor.
Nutrition
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