French Onion Ground Beef Casserole is a creamy, cheesy dinner made with seasoned ground beef, tender egg noodles, French onion soup, cream of mushroom soup, sour cream, green beans, and mozzarella cheese. It’s finished with crispy fried onions for the perfect crunchy topping.
I love this casserole because it takes simple ingredients and turns them into a hearty comfort food dinner. The creamy French onion filling, tender noodles, melted cheese, and crispy onions give you so many different flavors and textures in every bite. 🧅🥩🧀
Why I Love French Onion Casserole
Ingredient Notes
- Egg Noodles: A 12-ounce bag of egg noodles makes this casserole hearty and filling. Cook them just until al dente since they’ll continue cooking in the oven.
- Ground Beef: I use 1½ pounds of ground beef. Drain any excess grease after browning so the casserole stays creamy instead of greasy.
- Cream of Mushroom Soup: A 10-ounce can creates the creamy base for the casserole and pairs really well with the beef and onions.
- French Onion Soup: This is where a lot of the casserole’s flavor comes from. One 10-ounce can adds that rich, savory onion flavor without having to caramelize onions from scratch.
- Sour Cream: One cup of sour cream makes the sauce creamy and adds a slight tang that balances the rich beef and cheese.
- Green Beans: I use 1 cup of frozen green beans for an easy vegetable addition. There’s no need to cook them first.
- Mozzarella Cheese: Eight ounces of mozzarella gives the casserole a mild, creamy, cheesy layer. Freshly shredded mozzarella will give you the best melt.
- Crispy French Fried Onions: One cup adds the crunchy finishing touch and even more French onion flavor. Add these toward the end of baking so they stay nice and crispy. 🧅🥩🧀
Be sure to check out the full recipe and ingredient list below
How To Make French Onion Ground Beef Casserole
- Preheat the oven to 350°F. Lightly grease a 9×13-inch baking dish.
- Cook the egg noodles according to the package directions until al dente. Drain and set aside.
- In a large skillet over medium heat, cook the ground beef until browned and crumbled. Drain any excess grease.
- Reduce the heat to low and stir in the cream of mushroom soup and French onion soup until well combined.
- Stir in the sour cream and frozen green beans. Add the cooked egg noodles and gently stir until everything is evenly coated in the creamy sauce.
- Transfer the mixture to the prepared baking dish and spread it into an even layer.
- Sprinkle the mozzarella cheese evenly over the top.
- Bake uncovered for 20 minutes.
- Sprinkle the crispy French fried onions over the cheese and return to the oven for 5–10 minutes, or until the casserole is hot and bubbly, the cheese is melted, and the onions are golden and crispy.
- Let the casserole rest for 5 minutes before serving.
Be sure to check out the full recipe and ingredient list below
Tips I Found Helpful
- Cook the egg noodles just until al dente so they don’t become too soft while the casserole bakes.
- Drain the ground beef well before adding the soups to keep the casserole creamy instead of greasy.
- Use 12 ounces of egg noodles even if your package is larger. Too many noodles can soak up the sauce and make the casserole dry.
- Stir the sour cream in over low heat to keep the sauce smooth and creamy.
- There’s no need to thaw the frozen green beans before adding them to the casserole.
- Add the crispy French fried onions during the last 5–10 minutes of baking so they stay crunchy and don’t burn.
- Freshly shredded mozzarella melts more smoothly than pre-shredded cheese.
- Let the casserole rest for about 5 minutes before serving so the creamy filling has time to set.
- For extra French onion flavor, add a little extra crispy fried onion to each serving. 🧅🥩🧀
Frequently Asked Questions
More Casseroles I Love
French Onion Ground Beef Casserole
This French Onion Ground Beef Casserole is a creamy, cheesy comfort food dinner made with ground beef, tender egg noodles, French onion soup, green beans, mozzarella cheese, and crispy fried onions. It's an easy family casserole that's perfect for busy weeknights.
Ingredients
- 12 oz bag of egg noodles
- 1.5 pounds ground beef
- 1 can 10oz cream mushroom soup
- 1 can 10 oz French Onion soup
- 1 cup sour cream
- 1 cup green beans (I used frozen)
- 8 oz Mozzarella cheese
- 1 cup Crispy french onions
Instructions
- Preheat the oven to 350°F. Lightly grease a 9×13-inch baking dish.
Cook the egg noodles according to the package directions until al dente. Drain and set aside.
In a large skillet over medium heat, cook the ground beef until browned and crumbled. Drain any excess grease.
Reduce the heat to low and stir in the cream of mushroom soup and French onion soup until well combined.
Stir in the sour cream and frozen green beans.
Add the cooked egg noodles and gently stir until everything is evenly coated in the creamy sauce.
Transfer the mixture to the prepared baking dish and spread it into an even layer.
Sprinkle the mozzarella cheese evenly over the top.
Bake uncovered for 20 minutes.
Sprinkle the crispy French fried onions over the cheese and return to the oven for 5–10 minutes, or until the casserole is hot and bubbly, the cheese is melted, and the onions are golden and crispy.
Let the casserole rest for 5 minutes before serving.
Notes
Cook the egg noodles just until al dente since they'll continue cooking in the oven. Be sure to drain the ground beef well before adding the soups. Use 12 ounces of egg noodles for the best sauce-to-noodle ratio. Add the crispy French fried onions during the last 5–10 minutes of baking so they stay golden and crunchy. Let the casserole rest for about 5 minutes before serving.
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This sounds like beef stroganoff with green beans and mozzarella cheese
I don’t like French’s crispy onions could I use onions fried with ground beef?
This was an excellent recipe. Every age group in my family loved it