Bring the comfort of a cozy diner meal right to your kitchen with this French Onion Ground Beef and Rice Casserole. It’s a one-dish wonder featuring seasoned ground beef, fluffy white rice, creamy French onion sauce, and bubbling cheese. Whether you’re looking for an easy dinner idea, a crowd-pleasing potluck favorite, or just a simple yet hearty food idea, this dish checks all the boxes. Perfect for a busy night, yet rich and indulgent enough for special occasions—your new go-to in the world of easy recipes.
Why You’ll Love This Recipe
- Easy to Prepare: This casserole comes together quickly with minimal prep time.
- Flavorful Comfort Food: A delightful mix of beef and creamy French onion soup creates a rich flavor.
- Versatile Dish: Perfect for family dinners or gatherings; it can be easily doubled for larger groups.
- One-Dish Meal: Less cleanup is required since everything bakes in one pan.
- Kid-Friendly: The cheesy topping makes it appealing to children and adults alike.
Tools and Preparation
To make your cooking experience seamless, gather the necessary tools before you start preparing the casserole.
Essential Tools and Equipment
- Large skillet
- Mixing bowl
- 9×13-inch baking dish
- Measuring cups and spoons
- Spatula
Importance of Each Tool
- Large skillet: Ideal for browning the ground beef evenly and efficiently.
- Mixing bowl: Allows for easy combining of ingredients without making a mess.
- 9×13-inch baking dish: Provides ample space for the casserole to bake properly, ensuring even cooking.

Ingredients
For the Casserole
- 1 lb ground beef
- 3 cups cooked white rice
- 1 can (10.5 oz) condensed French onion soup
- 1 cup sour cream
- 2 cups shredded mozzarella cheese
- 2 tbsp butter
Seasonings
- 1 tsp onion powder
- 1 tsp garlic powder
- Salt and pepper to taste
Garnish (Optional)
- 1 tbsp chopped parsley
How to Make French Onion Ground Beef and Rice Casserole
Step 1: Cook the Ground Beef
In a large skillet, melt butter over medium heat. Add ground beef and cook until browned. Drain excess fat.
Step 2: Add Seasonings
Stir in onion powder, garlic powder, salt, and pepper to enhance the flavor of the beef mixture.
Step 3: Combine Ingredients
In a mixing bowl, combine the cooked beef mixture with cooked rice, condensed soup, and sour cream until well combined.
Step 4: Preheat Oven
Preheat your oven to 350°F (175°C). Grease your 9×13-inch baking dish to prevent sticking.
Step 5: Assemble Casserole
Spread the mixture evenly into the greased baking dish. Top with shredded mozzarella cheese for that bubbly finish.
Step 6: Bake
Bake uncovered for 25–30 minutes or until cheese is melted and bubbly.
Step 7: Serve
Garnish with chopped parsley before serving to add a touch of color and freshness.
Enjoy your delicious French Onion Ground Beef and Rice Casserole!
How to Serve French Onion Ground Beef and Rice Casserole
This French Onion Ground Beef and Rice Casserole is a versatile dish that can be served in various delightful ways. Whether you’re enjoying it on a cozy night in or at a gathering, these serving suggestions will enhance your dining experience.
Individual Portions
- Serve in individual bowls for a comforting presentation, allowing each guest to savor their portion with ease.
Fresh Salad
- Pair the casserole with a fresh garden salad. The crispness of the greens balances the creamy richness of the dish.
Garlic Bread
- Offer warm garlic bread on the side. Its buttery, garlicky flavor complements the casserole wonderfully.
Steamed Vegetables
- Add a side of steamed vegetables like broccoli or green beans. This provides a nutritious contrast to the creamy casserole.
Pickled Vegetables
- Serve with pickled vegetables for a tangy crunch that cuts through the richness of the dish.
Sliced Avocado
- Top each serving with sliced avocado. The creaminess of the avocado adds an extra layer of flavor and texture.
How to Perfect French Onion Ground Beef and Rice Casserole
To ensure your French Onion Ground Beef and Rice Casserole turns out perfectly every time, consider these helpful tips.
- Use Lean Ground Beef: Opt for lean ground beef to reduce excess fat while maintaining flavor.
- Cook Rice Properly: Ensure your rice is fluffy and fully cooked before mixing it into the casserole for optimal texture.
- Mix Ingredients Thoroughly: Combine all ingredients well to ensure even distribution of flavors throughout the dish.
- Check for Doneness: Bake until cheese is golden and bubbly; this ensures everything is heated through properly.
- Let It Rest: Allow the casserole to rest for a few minutes before serving. This helps it set and makes portioning easier.
- Experiment with Cheese: Try different types of cheese like cheddar or gouda for unique flavor variations.
Best Side Dishes for French Onion Ground Beef and Rice Casserole
Complement your French Onion Ground Beef and Rice Casserole with these delicious side dishes that add variety to your meal.
- Caesar Salad: A classic Caesar salad with romaine lettuce, croutons, and parmesan adds a fresh, crunchy element.
- Roasted Potatoes: Crispy roasted potatoes seasoned with herbs provide a hearty side that pairs well with the casserole.
- Coleslaw: A tangy coleslaw adds brightness and crunch, balancing the richness of the dish.
- Grilled Asparagus: Lightly grilled asparagus spears bring vibrant color and flavor to your plate.
- Corn on the Cob: Sweet corn on the cob is always a favorite; its sweetness contrasts nicely with savory flavors.
- Baked Beans: A side of baked beans offers a sweet-savory combo that works harmoniously with beef dishes.
- Stuffed Peppers: Colorful stuffed peppers filled with grains or vegetables make for an attractive side option.
- Quinoa Salad: A refreshing quinoa salad mixed with veggies adds nutrition and complements the main dish beautifully.
Common Mistakes to Avoid
When making the French Onion Ground Beef and Rice Casserole, avoiding common mistakes can elevate your dish.
- Using uncooked rice: Make sure to use cooked white rice. Uncooked rice will not cook properly in the casserole and may result in a crunchy texture.
- Skimping on seasoning: Proper seasoning is key for flavor. Don’t forget to add salt and pepper when cooking the beef to enhance its taste.
- Not allowing cheese to melt fully: Bake until the cheese is bubbly and golden. Undercooking can lead to a less appealing texture and taste.
- Skipping the greasing step: Always grease your baking dish before adding the casserole mixture. This prevents sticking and makes for easier serving.
- Overcrowding the pan: Ensure you have enough space in your baking dish for even cooking. If needed, use a larger dish instead of overcrowding.

Storage & Reheating Instructions
Refrigerator Storage
- The casserole can be stored in the refrigerator for up to 3–4 days.
- Use an airtight container for optimal freshness.
Freezing French Onion Ground Beef and Rice Casserole
- Freeze portions of the casserole for up to 2–3 months.
- Ensure it’s cooled completely before placing it in freezer-safe containers or bags.
Reheating French Onion Ground Beef and Rice Casserole
- Oven: Preheat your oven to 350°F (175°C) and cover with foil. Bake for 20-30 minutes or until heated through.
- Microwave: Heat in microwave-safe dishes in short intervals (1-2 minutes), stirring in between until hot.
- Stovetop: Reheat on low heat, stirring occasionally until warmed through; add a splash of broth if it seems dry.
Frequently Asked Questions
Here are some common questions about preparing French Onion Ground Beef and Rice Casserole.
Can I make French Onion Ground Beef and Rice Casserole ahead of time?
Yes, you can prepare the casserole a day in advance. Just cover it tightly and refrigerate until ready to bake.
What can I substitute for ground beef?
Ground turkey, chicken, or lamb are excellent substitutes that maintain flavor while offering variety.
How long does French Onion Ground Beef and Rice Casserole last?
The casserole lasts up to 3–4 days in the refrigerator or 2–3 months if frozen properly.
Can I customize my French Onion Ground Beef and Rice Casserole?
Absolutely! Feel free to add vegetables like bell peppers or mushrooms for extra nutrition and flavor.
Final Thoughts
French Onion Ground Beef and Rice Casserole is a delightful blend of flavors that can easily become your new favorite weeknight meal. Its rich creaminess paired with cheesy goodness makes it perfect for any occasion. Don’t hesitate to customize it with your favorite ingredients—this dish is as versatile as it is comforting!

French Onion Ground Beef and Rice Casserole
Bring the cozy comfort of a diner right into your kitchen with this French Onion Ground Beef and Rice Casserole. This hearty dish combines seasoned ground beef, fluffy white rice, creamy French onion soup, and bubbling cheese for a satisfying meal that’s perfect for busy weeknights or special gatherings. With minimal prep time and an effortless one-dish assembly, it’s an ideal solution for families looking to enjoy a flavorful dinner without the hassle. Whether served at home or shared at potlucks, this casserole is sure to delight everyone at the table.
- Total Time: 45 minutes
- Yield: Serves 6
Ingredients
- 1 lb ground beef
- 3 cups cooked white rice
- 1 can (10.5 oz) condensed French onion soup
- 1 cup sour cream
- 2 cups shredded mozzarella cheese
- 2 tbsp butter
- 1 tsp onion powder
- 1 tsp garlic powder
- Salt and pepper to taste
Instructions
- In a large skillet, melt butter over medium heat. Add ground beef and brown until fully cooked; drain excess fat.
- Stir in onion powder, garlic powder, salt, and pepper to season the beef mixture.
- In a mixing bowl, combine the cooked beef with rice, condensed soup, and sour cream until well mixed.
- Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- Spread the mixture evenly in the baking dish and top with shredded mozzarella cheese.
- Bake uncovered for 25–30 minutes or until cheese is bubbly and golden.
- Let it rest briefly before serving.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1/6 of casserole (approximately 300g)
- Calories: 450
- Sugar: 3g
- Sodium: 850mg
- Fat: 25g
- Saturated Fat: 12g
- Unsaturated Fat: 11g
- Trans Fat: 0g
- Carbohydrates: 35g
- Fiber: 2g
- Protein: 25g
- Cholesterol: 80mg