If you’re searching for a comforting dish that combines the rich flavors of French onion soup with the heartiness of ground beef, this French Onion Ground Beef Casserole is the perfect choice! This dish is both satisfying and simple to prepare, making it ideal for busy weeknights or a cozy family dinner. Packed with savory onions, juicy beef, and creamy cheese, every bite is a delightful combination of flavors and textures.
Ingredients

- 1 lb ground beef
- 2 large onions, thinly sliced
- 2 cloves garlic, minced
- 1 cup beef broth
- 1 can cream of mushroom soup
- 1 cup shredded cheddar cheese
- Salt and pepper to taste
- 1 tbsp olive oil
- 1/2 cup sour cream
Equipments
- Oven
- Large frying pan
- Baking dish
- Mixing spoon
How to Make French Onion Ground Beef Casserole – Step By Step
Step 1: Sauté the Onions and Garlic
Begin by heating olive oil in a large frying pan over medium heat. Add the sliced onions and sauté them until they become translucent and caramelized, around 15 minutes. Stir in the minced garlic and cook for an additional 2-3 minutes, ensuring they don’t burn and turn a lovely golden brown.
Step 2: Brown the Ground Beef
Push the onions to the side of the pan and add the ground beef. Cook it until it is fully browned and no pink remains, breaking it up with a spoon as it cooks. This should take about 5-7 minutes. Season with salt and pepper according to your preference.
Step 3: Mix in the Cream of Mushroom Soup
Once the beef is browned, lower the heat and add the can of cream of mushroom soup. Stir well to combine it with the beef and onion mixture, creating a creamy sauce that envelops the ingredients beautifully. Allow the mixture to come to a gentle simmer.
Step 4: Prepare the Casserole Base
Add the beef broth and sour cream to your beef mixture, stirring constantly to combine. This will create a rich, flavorful base for your casserole, ensuring every bite is deliciously creamy and moist. Adjust seasoning as needed.
Step 5: Assemble the Casserole
Preheat your oven to 350°F (175°C). Transfer the beef mixture into a baking dish, ensuring it is evenly spread. Top with the shredded cheddar cheese, which will melt into bubbly, golden goodness in the oven!
Step 6: Bake and Serve
Bake the casserole in the preheated oven for about 25–30 minutes, or until the cheese is bubbly and golden brown. Let it cool slightly before serving, allowing the flavors to meld together. Enjoy your delicious French Onion Ground Beef Casserole with a side salad or some crusty bread!
How to Serve French Onion Ground Beef Casserole
Serve your casserole warm, garnished with freshly chopped parsley for a touch of color and added freshness. Pair it with a crisp green salad or some garlic bread for a well-rounded meal that will delight everyone at the table.
Recipe Success Tips & Suggestions
- Use fresh, high-quality ingredients to enhance the flavors of your casserole.
- If you prefer a different cheese, feel free to substitute it for cheddar. Both mozzarella and Swiss cheese work well in this recipe.
- Adding a splash of Worcestershire sauce can take the flavor of the beef to the next level.
- Feel free to add some chopped mushrooms or bell peppers for an added nutritional boost and texture.
High-Protein French Onion Ground Beef Casserole for the Fitness Enthusiast
If you’re looking to pack a protein punch, consider swapping the ground beef with lean ground turkey or chicken. Use Greek yogurt instead of sour cream for added protein and a tangy flavor. You can also increase the cheese quantity to make it even more indulgent while adding extra protein!
Carb-Conscious French Onion Ground Beef Casserole
For those watching their carb intake, you can replace the onions with shallots and use a low-carb cream of mushroom soup. Additionally, you can omit the sour cream and use a keto-friendly cheese to cut down on carbs without sacrificing taste.
Storage Instructions
This casserole can be stored in the refrigerator for up to three days. Simply cover the dish with aluminum foil or plastic wrap. For longer storage, divide the casserole into portions and freeze in airtight containers for up to two months. Reheat from frozen in the oven or microwave until heated through.
FAQs
Can I make this casserole ahead of time? Yes, you can assemble the casserole and refrigerate it for up to a day before baking. Just ensure you bake it thoroughly before serving.
What can I serve with this casserole? A fresh green salad, steamed vegetables, or crusty bread make great accompaniments.
Can I use a different type of cheese? Absolutely, a variety of cheeses like mozzarella or Swiss can be used for a different flavor profile.
Is it possible to make this casserole dairy-free? Yes, substitute dairy-free cheese and use a plant-based mushroom soup and sour cream alternatives.
How do I prevent the casserole from drying out? Ensure that the casserole is covered properly when storing and add a bit of broth if reheating to retain moisture.
Share Your Thoughts on This French Onion Ground Beef Casserole!
This French Onion Ground Beef Casserole truly brings comfort food to your table. It’s flavorful, easy to prepare, and an instant favorite for anyone who tries it. We’d love to hear your thoughts on this recipe, so feel free to leave a comment, share your tips, and tag us in your culinary creations on social media. Enjoy your cooking adventure, and don’t forget to share the love by sharing this recipe with friends and family!

Delicious French Onion Ground Beef Casserole Recipe
Ingredients
Main Ingredients
- ground beef
- large onions
- garlic
- beef broth
- cream of mushroom soup
- cheddar cheese
- salt and pepper
- olive oil
- sour cream
Instructions
Steps
- Begin by heating olive oil in a large frying pan over medium heat. Add the sliced onions and sauté them until they become translucent and caramelized, around 15 minutes. Stir in the minced garlic and cook for an additional 2-3 minutes, ensuring they don’t burn and turn a lovely golden brown.
- Push the onions to the side of the pan and add the ground beef. Cook it until it is fully browned and no pink remains, breaking it up with a spoon as it cooks. This should take about 5-7 minutes. Season with salt and pepper according to your preference.
- Once the beef is browned, lower the heat and add the can of cream of mushroom soup. Stir well to combine it with the beef and onion mixture, creating a creamy sauce that envelops the ingredients beautifully. Allow the mixture to come to a gentle simmer.
- Add the beef broth and sour cream to your beef mixture, stirring constantly to combine. This will create a rich, flavorful base for your casserole, ensuring every bite is deliciously creamy and moist. Adjust seasoning as needed.
- Preheat your oven to 350°F (175°C). Transfer the beef mixture into a baking dish, ensuring it is evenly spread. Top with the shredded cheddar cheese, which will melt into bubbly, golden goodness in the oven!
- Bake the casserole in the preheated oven for about 25–30 minutes, or until the cheese is bubbly and golden brown. Let it cool slightly before serving, allowing the flavors to meld together. Enjoy your delicious French Onion Ground Beef Casserole with a side salad or some crusty bread!
