This French onion beef casserole is hearty, flavorful, and full of comforting taste. Tender ground beef, caramelized onions, and a rich creamy sauce combine to create a dish that feels warm and satisfying. Easy to prepare, it is perfect for family dinners, meal prep, or cozy nights when you want a filling homemade meal.
Ingredients List
1 pound ground beef
1 packet French onion soup mix
1 cup sliced mushrooms
1 small onion finely chopped
1 cup shredded cheddar cheese
2 cups cooked pasta or egg noodles
1 cup sour cream
Salt and black pepper to taste
Step by Step Instructions
Step 1: Prepare Ingredients
Preheat oven to 350 degrees Fahrenheit or 180 degrees Celsius. In a skillet, cook ground beef until browned. Drain excess fat and set aside.
Step 2: Cook Onions and Mushrooms
In the same skillet, sauté chopped onion and sliced mushrooms until soft and caramelized.
Step 3: Mix Casserole
In a large bowl, combine cooked beef, sautéed onions and mushrooms, cooked pasta, French onion soup mix, sour cream, salt, and black pepper. Stir until evenly mixed.
Step 4: Assemble and Top
Transfer mixture to a greased baking dish. Sprinkle shredded cheddar cheese evenly over the top.
Step 5: Bake the Casserole
Bake in the preheated oven for 25 to 30 minutes or until the cheese is melted and golden.
Step 6: Serve
Allow casserole to rest for 5 minutes before serving. Enjoy warm as a comforting main dish with a side salad or steamed vegetables.

Cook Time
Preparation Time 15 minutes
Cooking Time 25 to 30 minutes
Total Time 40 to 45 minutes
Servings
Serves 4 to 6
Nutritional Information( approx. per Serving)
Calories 350
Protein 22 grams
Carbohydrates 18 grams
Fat 20 grams
Fiber 2 grams
Storage Instructions
Store leftover casserole in an airtight container in the refrigerator for up to three days. Reheat gently in the oven or microwave before serving.
Suggestions
Add chopped bell peppers or zucchini for extra nutrition
Use mozzarella or Swiss cheese for a different flavor
Serve with a light side salad or garlic bread
Seasonal Relevance
This French onion beef casserole is perfect for fall and winter meals but works well year-round for a warm, comforting dinner.
Conclusion
French onion beef casserole is simple, hearty, and full of flavor. Tender beef, caramelized onions, and melted cheese create a comforting dish that everyone will love. Ideal for family dinners, meal prep, or cozy nights at home.
French Onion Beef Casserole That’s Pure Comfort
4 to 6
servings15
minutes25
minutes350
kcalA rich hearty casserole with caramelized onions ground beef and creamy cheesy sauce. Perfect for cozy family dinners or weeknight meals.
Ingredients
1 pound ground beef
2 large onions thinly sliced
2 tablespoons butter
1 teaspoon garlic powder
1 teaspoon salt
1 teaspoon black pepper
1 tablespoon all purpose flour
1 cup beef broth
Half cup sour cream
1 cup shredded cheddar cheese
1 teaspoon Worcestershire sauce optional
Directions
- Melt butter in a skillet and cook onions over low heat until golden and soft. Add garlic powder and stir for one minute.
- Add ground beef to the skillet and cook until browned. Drain excess fat if needed.
- Sprinkle flour over the beef and onions. Stir for one to two minutes. Gradually whisk in beef broth and Worcestershire sauce and cook until thickened.
- Stir in sour cream until well blended. Season with salt and pepper to taste.
- Transfer mixture into a greased baking dish and sprinkle shredded cheddar cheese on top.
- Bake at 350 degrees Fahrenheit or 180 degrees Celsius for twenty to twenty five minutes until cheese is melted and bubbly.
Recipe Video
Notes
- Add sliced mushrooms for extra flavor.
- Use mozzarella or cheese blend for a different taste.
- Serve with crusty bread or over cooked rice.
- Garnish with fresh parsley for extra color and flavor.
