If you’re craving cozy comfort food that comes together with minimal fuss and maximum flavor, the French Onion Ground Beef and Rice Casserole is your ticket to dinnertime bliss. Imagine all the savory richness of classic French onion soup, hearty ground beef, creamy rice, and bubbling cheese, all baked to golden perfection in one glorious dish. This casserole delivers layers of deep flavor, a satisfyingly creamy texture, and a crispy onion topping that makes every bite irresistible. Whether you’re feeding a hungry family or looking for the perfect potluck crowd-pleaser, this recipe is sure to become a cherished favorite at your table.

Ingredients You’ll Need
With just a handful of everyday ingredients, you can create something truly special. Each component in this French Onion Ground Beef and Rice Casserole brings its own magic, from the aromatic base to the final crispy finish. Here’s what you’ll need and a quick tip for each:
- Ground Beef: Go for 80/20 for the best balance of flavor and tenderness, and don’t forget to drain the extra fat for a lighter casserole.
- Onion: Finely diced onion melts into the casserole, giving it the signature sweet savoriness of French onion soup.
- Garlic: Fresh minced garlic adds a subtle kick and warmth to the base flavors.
- Olive Oil: A splash of olive oil helps the beef brown beautifully and brings out the onion’s sweetness.
- Condensed French Onion Soup: This concentrated soup infuses the whole dish with deep caramelized onion flavor.
- Cream of Mushroom Soup: Adds creaminess and a subtle earthy note that ties everything together.
- Beef Broth: Keeps the rice moist while amping up the savoriness for a truly satisfying casserole.
- Long-Grain White Rice: Uncooked rice soaks up all the flavors as it bakes, becoming tender and fluffy.
- Worcestershire Sauce: Just a teaspoon boosts the umami and rounds out the flavors.
- Dried Thyme: Adds a hint of herbal brightness that beautifully complements the beef and onions.
- Black Pepper: A touch of spice to balance the richness.
- Salt: Essential for enhancing the overall flavor, but adjust to taste since the soups add saltiness too.
- Mozzarella Cheese: Melts into gooey, stretchy perfection on top of the casserole.
- Swiss or Gruyère Cheese: For that nutty, slightly tangy bite that’s classic in French onion dishes.
- French Fried Onions: The iconic crispy topping that takes this casserole over the top.
- Fresh Parsley: A sprinkle of green for freshness and a pop of color when serving.
How to Make French Onion Ground Beef and Rice Casserole
Step 1: Prep Your Oven and Pan
Start by preheating your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with a bit of oil or nonstick spray. Getting this step out of the way ensures your casserole won’t stick and makes cleanup a breeze later.
Step 2: Brown the Beef and Onions
In a large skillet, heat the olive oil over medium-high heat. Add the ground beef and diced onion. Cook, stirring frequently, until the beef is browned and the onion is soft and translucent, about 5 to 6 minutes. Stir in the garlic during the last minute of cooking so it releases its aroma without burning. If there’s extra fat in the skillet, go ahead and drain it off for a lighter casserole.
Step 3: Mix Together the Flavor Base
Grab a large mixing bowl and combine the condensed French onion soup, cream of mushroom soup, beef broth, Worcestershire sauce, dried thyme, black pepper, and salt. This creates the ultra-savory, creamy base that will flavor every grain of rice and bite of beef in your casserole.
Step 4: Add Rice and Beef Mixture
Stir the uncooked long-grain white rice into your soup mixture, then fold in the browned beef and onion from the skillet. Mix until everything is evenly combined. This is where the magic happens: the rice will bake right in the casserole, soaking up all those luscious flavors.
Step 5: Assemble and Bake
Pour the mixture into your prepared baking dish and spread it out evenly. Cover tightly with foil to trap in the moisture, then bake for 55 to 60 minutes. You’ll know it’s ready when the rice is tender and most of the liquid has been absorbed, creating a creamy, cohesive casserole.
Step 6: Add Cheese and Finish Baking
Remove the foil and sprinkle the mozzarella and Swiss (or Gruyère) cheeses over the top. Return the casserole to the oven, uncovered, for another 5 to 7 minutes, or until the cheese is melted and bubbly. This final step gives your French Onion Ground Beef and Rice Casserole the irresistible cheesy crown it deserves.
Step 7: Top and Garnish
Finish by scattering French fried onions all over the top and garnishing with a generous handful of fresh parsley. The crispy onions add crunch, while the parsley brings a burst of color and freshness. Now you’re ready to serve!
How to Serve French Onion Ground Beef and Rice Casserole

Garnishes
The signature finish for this casserole is a layer of golden French fried onions and a sprinkle of chopped fresh parsley. If you’re feeling fancy, you can add a few extra shreds of cheese or even a pinch of fresh thyme for an aromatic touch. These simple garnishes add flavor, color, and just the right amount of crunch to every forkful.
Side Dishes
Since French Onion Ground Beef and Rice Casserole is so hearty and rich, it pairs beautifully with lighter sides. A crisp green salad with a tangy vinaigrette is a classic choice, or try steamed green beans, roasted broccoli, or even just a simple plate of sliced tomatoes. Warm dinner rolls or baguette slices are also perfect for scooping up those cheesy, savory bites.
Creative Ways to Present
For a fun twist, serve the casserole in individual ramekins or oven-safe bowls for a dinner party-worthy presentation. You can also scoop it into hollowed-out bell peppers and bake until the peppers are tender for a colorful, single-serve option. If you’re bringing it to a potluck, sprinkle the fried onions on just before serving so they stay crunchy and irresistible.
Make Ahead and Storage
Storing Leftovers
Leftover French Onion Ground Beef and Rice Casserole keeps well in the refrigerator for up to four days. Simply cover the baking dish tightly with foil or transfer portions to airtight containers. The flavors deepen as it rests, making for delicious next-day lunches or quick weeknight dinners.
Freezing
If you want to freeze the casserole, assemble and bake it as directed but leave off the fried onion topping. Let it cool completely, then wrap it tightly in a double layer of foil or use a freezer-safe container. It will keep in the freezer for up to three months. When ready to eat, thaw in the refrigerator overnight and add the crispy onions just before reheating.
Reheating
To reheat, cover the casserole with foil and warm in a 350°F oven until heated through (about 20 to 30 minutes if reheating the whole dish). You can also microwave individual portions for a few minutes, but the oven will help revive that crispy topping. Add a fresh sprinkle of fried onions and parsley before serving for the best texture and flavor.
FAQs
Can I use brown rice instead of white rice?
Absolutely! Just keep in mind that brown rice takes longer to cook and may need a bit more liquid. You may want to increase the baking time and check for doneness before adding the cheese topping.
Is it possible to make this casserole ahead of time?
Yes, you can assemble the casserole a day in advance (without the fried onions), cover it tightly, and refrigerate it. When you’re ready to bake, let it come to room temperature for about 30 minutes and then proceed as directed. Add the crispy onions just before serving for the best texture.
What’s the best cheese substitute if I don’t have Gruyère?
If Gruyère isn’t available, Swiss cheese is a great substitute. For a slightly different flavor, you can also try provolone or even sharp white cheddar for extra depth and creaminess.
Can I add vegetables to the French Onion Ground Beef and Rice Casserole?
Definitely! Mushrooms, diced bell peppers, or spinach make excellent additions. Simply sauté them with the onions and beef before mixing them into the casserole for extra color and nutrition.
How do I keep the fried onions crispy?
To ensure your fried onions stay crispy, add them after baking and just before serving. If you’re reheating leftovers, you can add a fresh sprinkle of fried onions to restore that satisfying crunch.
Final Thoughts
There’s something truly special about sharing a bubbling dish of French Onion Ground Beef and Rice Casserole with the people you love. With its savory layers, creamy rice, and cheesy goodness, this casserole is guaranteed to win hearts and fill bellies. Don’t be surprised if it becomes a regular request at your table—give it a try and savor every cozy, delicious bite!
Print
French Onion Ground Beef and Rice Casserole Recipe
- Prep Time: 15 minutes
- Cook Time: 1 hour
- Total Time: 1 hour 15 minutes
- Yield: 6 servings
- Category: Main Course, Casserole
- Method: Baking
- Cuisine: American
- Diet: Non-Vegetarian
Description
A comforting and cheesy French Onion Ground Beef and Rice Casserole combining savory ground beef, flavorful French onion soup, and melted mozzarella and Swiss cheeses, baked to perfection with a crispy fried onion topping. Perfect for an easy weeknight dinner that the whole family will enjoy.
Ingredients
Meat and Vegetables
- 1 pound ground beef
- 1 medium onion, finely diced
- 2 cloves garlic, minced
Liquids and Soups
- 1 can (10.5 ounces) condensed French onion soup
- 1 can (10.5 ounces) cream of mushroom soup
- 1 cup beef broth
Grains and Seasonings
- 1 cup long-grain white rice, uncooked
- 1 teaspoon Worcestershire sauce
- 1 teaspoon dried thyme
- 1/2 teaspoon black pepper
- 1/2 teaspoon salt
Cheese and Toppings
- 1 cup shredded mozzarella cheese
- 1 cup shredded Swiss or Gruyère cheese
- 1/2 cup French fried onions (for topping)
- Fresh parsley for garnish
Oil
- 1 tablespoon olive oil
Instructions
- Preheat and Prepare: Preheat the oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish to prevent sticking and ensure easy cleanup.
- Cook Beef and Onion: Heat the olive oil in a large skillet over medium-high heat. Add the ground beef and diced onion, cooking until the beef is browned and the onion is softened, about 5 to 6 minutes. Stir occasionally to cook evenly.
- Add Garlic: Stir in the minced garlic and cook for an additional 1 minute until fragrant. Drain any excess fat from the skillet if necessary to reduce greasiness.
- Mix Soups and Broth: In a large bowl, combine the condensed French onion soup, cream of mushroom soup, beef broth, Worcestershire sauce, dried thyme, black pepper, and salt. Whisk until smooth and well blended.
- Combine with Rice and Beef: Stir in the uncooked long-grain rice and the browned beef and onion mixture into the soup mixture until everything is evenly incorporated.
- Bake Covered: Transfer the mixture into the prepared baking dish. Cover tightly with aluminum foil to trap steam and bake for 55 to 60 minutes, or until the rice is tender and most of the liquid has been absorbed.
- Add Cheese and Melt: Remove the casserole from the oven, uncover, and sprinkle evenly with shredded mozzarella and Swiss or Gruyère cheese. Return to the oven and bake uncovered for another 5 to 7 minutes, or until the cheese is melted and bubbly.
- Top and Garnish: Remove the casserole again, sprinkle French fried onions over the top for a crispy texture, and garnish with fresh parsley before serving warm.
Notes
- For extra richness, stir in 1/2 cup sour cream into the casserole mixture before adding the cheese toppings.
- This casserole pairs wonderfully with a green salad or roasted vegetables for a balanced meal.
- Leftovers can be stored in the refrigerator for up to 4 days and reheated in the oven or microwave for convenience.
Nutrition
- Serving Size: 1 portion
- Calories: 435
- Sugar: 4 g
- Sodium: 970 mg
- Fat: 21 g
- Saturated Fat: 10 g
- Unsaturated Fat: 9 g
- Trans Fat: 1 g
- Carbohydrates: 40 g
- Fiber: 2 g
- Protein: 25 g
- Cholesterol: 80 mg

