French Onion Ground Beef Casserole Recipe
If you’re craving a comforting dish that combines the rich flavors of caramelized onions and hearty ground beef with the crispy, cheesy goodness of a casserole, look no further than this French Onion Ground Beef Casserole Recipe. It’s a cozy, soul-warming meal that brings together the classic essence of French onion soup in a wholly satisfying baked form, perfect for family dinners or casual get-togethers. Every bite offers a delightful balance of savory beef, tender noodles, creamy sauce, and that irresistible crunchy topping everyone will love.

Ingredients You’ll Need
Each ingredient in this French Onion Ground Beef Casserole Recipe has been carefully chosen for simplicity and maximum flavor impact. From the sweetness of caramelized onions that build the dish’s depth, to the creamy mix that keeps everything luscious, these essentials work together beautifully for a comforting and hearty casserole.
- 1 lb ground beef: The main protein base, providing savory richness.
- 1 tablespoon olive oil: Perfect for sautéing onions and garlic without overpowering the flavors.
- 1 medium yellow onion, thinly sliced: Caramelized slowly to bring natural sweetness and depth.
- 2 cloves garlic, minced: Adds aromatic intensity and warmth.
- 1 (10.5 oz) can cream of mushroom soup: A creamy binder that adds earthiness and moisture.
- 1/2 cup sour cream: Brings tangy creaminess that balances the beef and onions.
- 1/2 teaspoon salt: Enhances all the savory flavors in the dish.
- 1/2 teaspoon black pepper: Adds subtle heat and complexity.
- 1 teaspoon Worcestershire sauce: Deep umami that enriches the beefiness.
- 1/2 teaspoon dried thyme: A fragrant herb that complements the onion and beef tones.
- 2 cups cooked egg noodles (or pasta of choice): The comforting carb component that soaks up all the sauce.
- 1 1/2 cups shredded mozzarella or Swiss cheese: Melts to gooey perfection for an indulgent topping.
- 1 1/2 cups crispy French fried onions (divided): Provides classic crunch and onion flavor on top and inside.
- Fresh parsley, chopped (optional): Adds a fresh, vibrant burst of color when garnishing.
How to Make French Onion Ground Beef Casserole Recipe
Step 1: Caramelize the Onions to Perfection
Start by heating olive oil in a skillet over medium heat, then slowly sauté your thinly sliced yellow onion until they turn a beautiful golden caramel color. This step usually takes about 10 to 12 minutes, but don’t rush it! The slow cooking draws out the onion’s natural sugars, creating a rich sweetness that’s foundational to the dish. Add the minced garlic near the end for a minute or two to wake up those flavors and create that signature fragrant base.
Step 2: Brown the Ground Beef
Next, add the ground beef to your skillet with the caramelized onions and garlic. Cook it thoroughly over medium heat, breaking it apart as it browns. Once no pink remains, drain any excess grease if needed to keep the casserole from becoming oily. The beef should be nicely browned and packed with that robust, meaty flavor that pairs perfectly with the sweet onions.
Step 3: Mix in the Creamy Ingredients and Seasonings
To your cooked beef and onions, stir in the can of cream of mushroom soup, sour cream, Worcestershire sauce, salt, black pepper, and dried thyme. This creamy combo not only binds everything together but also ensures each bite is luscious and full of flavor. The Worcestershire sauce deepens the savory profile, while thyme adds a subtle herbal note that rounds out the dish beautifully.
Step 4: Combine with Pasta and Crunchy Onions
Fold cooked egg noodles into the beef mixture to soak up all that delicious creamy goodness. Then toss in 1 cup of the crispy French fried onions for that classic texture and zing. This layering of soft noodles and crunchy onion pieces gives the casserole an irresistible contrast that’s pure comfort food magic.
Step 5: Assemble and Bake to Golden Perfection
Transfer everything into a greased 9×13-inch baking dish, then generously top with shredded cheese and the remaining 1/2 cup of fried onions. Bake uncovered in a preheated 375°F (190°C) oven for 20 to 25 minutes until the casserole is bubbly and the cheese has melted and turned a lovely light golden color. This step brings all the flavors together, with the cheese melting into the casserole and the fried onions crisping on top for that perfect finish.
How to Serve French Onion Ground Beef Casserole Recipe

Garnishes
To brighten up the rich and hearty casserole, sprinkle some freshly chopped parsley on top right before serving. This adds a pop of vibrant green color and a fresh flavor that balances the savory and creamy elements, making every bite even more delightful.
Side Dishes
This casserole holds its own perfectly as a main dish, but pairing it with a crisp green salad or steamed vegetables adds a refreshing contrast to the rich textures. Something light and simple like roasted broccoli or a tangy vinaigrette-dressed mixed greens salad works beautifully alongside, keeping the overall meal well-rounded.
Creative Ways to Present
For casual dinners, serve the casserole straight from the baking dish family-style—there’s something warm and inviting about digging into a big, bubbling dish together. If you want to make it a bit fancier, plate individual portions and top each with an extra sprinkle of crispy fried onions and parsley. You can even add a small drizzle of balsamic glaze for a subtle sweet tang that complements the French onion flavors wonderfully.
Make Ahead and Storage
Storing Leftovers
If you’re lucky enough to have leftovers, store them in an airtight container in the refrigerator for up to 3 days. The flavors actually deepen overnight, making it even more delicious when reheated. Just be sure to cover it tightly to keep the cheesy topping from getting soggy.
Freezing
This French Onion Ground Beef Casserole Recipe freezes well and is perfect for busy nights ahead. Freeze the baked casserole in a freezer-safe container for up to 2 months. When ready to eat, thaw it overnight in the fridge and then reheat in the oven to bring back the crisp topping and gooey cheese.
Reheating
Reheat leftovers in a 350°F (175°C) oven for about 15-20 minutes until warmed through and bubbly. To keep the crispy onions topping nice and crunchy, you can add a fresh sprinkle of fried onions before reheating or briefly broil the top at the end for a minute or two, watching closely to prevent burning.
FAQs
Can I use a different type of cheese in this French Onion Ground Beef Casserole Recipe?
Absolutely! While mozzarella or Swiss cheese are classic choices for their meltability and mild flavor, you can also try Gruyère for a more authentic French onion soup taste, or even cheddar for a sharper kick. The key is to use a cheese that melts well to create that luscious casserole top.
Is there a way to make this recipe lighter or healthier?
Yes, you can lighten things up by using ground turkey or lean ground beef, swapping sour cream for Greek yogurt, and reducing the amount of cheese or using a part-skim variety. Adding extra veggies like mushrooms or spinach can also boost nutrition and add more flavor without sacrificing the comforting vibe.
Can I prepare this casserole vegetarian?
Definitely! Replace the ground beef with sautéed mushrooms, lentils, or a plant-based ground meat alternative. Make sure to use vegetable broth-based cream soup to keep it vegetarian-friendly. The caramelized onions and cheesy sauce remain the heart of the dish, so it will still satisfy those comforting cravings.
What’s the best pasta to use if I don’t have egg noodles?
You can use any pasta shape you like—bowties, penne, or even elbow macaroni work wonderfully. The goal is pasta that holds the sauce well and adds a lovely texture to the casserole. Just cook it al dente before mixing in, so it doesn’t get mushy after baking.
How do I make sure the onions caramelize perfectly without burning?
Be patient and keep the heat on medium or medium-low. Stir them frequently and use a bit of oil or butter to prevent sticking. If they start to brown too quickly or burn, reduce the heat slightly and continue stirring. The whole caramelization process takes about 10 to 12 minutes, but the sweet deep flavor is worth the wait.
Final Thoughts
This French Onion Ground Beef Casserole Recipe is truly a crowd-pleaser, blending the beloved flavors of classic French onion soup with the cozy heartiness of a pasta bake. It’s one of those dishes that feels like a warm hug on a plate—comforting, filling, and simply delicious. I promise, once you make it, it will earn a special place in your recipe rotation, perfect for weeknight dinners or sharing with loved ones. So gather your ingredients, and get ready to enjoy a bubbly, cheesy casserole that’s bursting with flavor!
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French Onion Ground Beef Casserole Recipe
- Total Time: 45 minutes
- Yield: 6 servings 1x
Description
This French Onion Ground Beef Casserole is a comforting and hearty dish combining caramelized onions, savory ground beef, creamy mushroom soup, and tender egg noodles, all topped with melted cheese and crispy French fried onions for a delightful crunch. Perfect for a family dinner, it’s easy to prepare and bakes to bubbly, cheesy perfection in under an hour.
Ingredients
Main Ingredients
- 1 lb ground beef
- 1 tablespoon olive oil
- 1 medium yellow onion, thinly sliced
- 2 cloves garlic, minced
- 1 (10.5 oz) can cream of mushroom soup
- 1/2 cup sour cream
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon Worcestershire sauce
- 1/2 teaspoon dried thyme
- 2 cups cooked egg noodles (or pasta of choice)
- 1 1/2 cups shredded mozzarella or Swiss cheese
- 1 1/2 cups crispy French fried onions (divided)
- Fresh parsley, chopped (optional, for garnish)
Instructions
- Preheat Oven and Prepare Dish: Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish to prevent sticking.
- Caramelize Onions: In a large skillet over medium heat, heat the olive oil. Add the thinly sliced onions and sauté for 10–12 minutes until they become caramelized and golden brown. Add the minced garlic and cook for an additional 1–2 minutes to release its aroma.
- Cook Ground Beef: Add the ground beef to the skillet with the onions and garlic. Cook until the beef is browned and fully cooked through. Drain any excess grease to keep the dish from becoming too oily.
- Mix Creamy Base: Stir in the cream of mushroom soup, sour cream, Worcestershire sauce, salt, black pepper, and dried thyme into the beef and onion mixture. Mix thoroughly to combine all the flavors evenly, then gently fold in the cooked egg noodles and 1 cup of the crispy French fried onions.
- Assemble Casserole: Transfer the mixture into the prepared baking dish. Evenly sprinkle the shredded cheese over the top, then add the remaining 1/2 cup of French fried onions for extra crunch.
- Bake: Place the casserole in the oven and bake uncovered for 20–25 minutes until the mixture is bubbly, and the cheese is melted and slightly golden on top.
- Garnish and Serve: Once out of the oven, sprinkle chopped fresh parsley over the casserole if desired, and serve hot for a delicious, comforting meal.
Notes
- For a lower-fat version, substitute ground beef with ground turkey and use reduced-fat cheese and sour cream.
- You can swap egg noodles with any pasta of your choice or even cooked rice for a different texture.
- Using fresh French fried onions right before serving ensures they stay crispy; avoid mixing all in before baking.
- This casserole can be prepared a day in advance and refrigerated; just add fried onions just before baking to maintain their texture.
- Leftovers can be stored in the refrigerator for up to 3 days and reheated in the oven or microwave.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Casserole
- Method: Baking
- Cuisine: American