Name: French Onion Ground Beef and Rice Casserole
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 1 pound ground beef; 1 cup uncooked white long-grain rice; 2 large yellow onions, thinly sliced; 2 cups beef broth; 2 tablespoons Worcestershire sauce; 2 cloves garlic, minced; 3 tablespoons butter; 1 teaspoon salt; 1/2 teaspoon black pepper; 1 cup shredded mozzarella cheese; 1 cup shredded Gruyère or Swiss cheese; 1/2 cup sour cream (optional)

There are few dishes as satisfying as a warm, bubbling casserole on a chilly evening. The French Onion Ground Beef and Rice Casserole delivers cozy comfort in every cheesy, savory spoonful. With its layers of tender rice, seasoned ground beef, sweet caramelized onions, and gooey melted cheese, this is the kind of meal that turns any night into a family favorite.

Inspired by the classic flavors of French onion soup, this casserole is the perfect marriage of rich onion flavor and hearty beefy goodness. It’s easy to make, incredibly budget-friendly, and fills the kitchen with mouthwatering aroma while baking. Whether you’re feeding a crowd or meal-prepping for the week, this recipe deserves a permanent spot in your rotation.

Preparation Phase & Tools to Use

Before diving into this flavor-packed bake, make sure your kitchen is armed with the right tools:

Large Skillet – Crucial for browning the ground beef and sautéing onions to golden perfection. A wide surface ensures even cooking and proper caramelization.
Medium Saucepan – Used to cook the rice until tender. A non-stick option will make cleanup a breeze.
Mixing Bowl – Needed to combine all components together before layering into the casserole dish.

9×13-Inch Baking Dish – The final stage for this casserole. It allows everything to cook evenly and lets the cheesy topping get that irresistible golden crust.
Wooden Spoon or Silicone Spatula – Helps you stir ingredients without scratching your cookware.
Aluminum Foil – Essential if you want to prevent the cheese from overbrowning while the casserole heats through.

With everything prepped and these tools by your side, you’re ready to bring this satisfying dish to life.

Ingredients for the French Onion Ground Beef and Rice Casserole

Each ingredient in this casserole plays an important role in building flavor, texture, and satisfaction. Here’s what you’ll need:

Ground Beef – The hearty base of this casserole. Use lean ground beef to minimize grease and keep things balanced.

White Rice – Adds a comforting starchiness and absorbs all the savory juices. Long-grain works best here.
Yellow Onions – The star ingredient. Slowly sautéed, they create the sweet and rich flavor reminiscent of French onion soup.
Beef Broth – Deepens the umami and helps cook the rice with added flavor.

Worcestershire Sauce – Brings a subtle tang and complexity that lifts the beef flavor.
Garlic – Enhances the overall depth with a bold, aromatic kick.
Butter – Used for sautéing and adds a rich, velvety mouthfeel.

Salt & Pepper – Essential for seasoning throughout each step.
Shredded Mozzarella & Gruyère (or Swiss) Cheese – Melts into gooey, bubbly perfection on top. Gruyère brings that classic French onion taste.
Sour Cream (optional) – For extra creaminess if you like your casseroles with a bit more body.

How To Make the French Onion Ground Beef and Rice Casserole

Step 1: Sauté the Onions

In a large skillet over medium heat, melt butter and add the sliced yellow onions. Sauté until they become golden brown and deeply caramelized, about 20–25 minutes. Stir frequently to avoid burning. Remove from pan and set aside.

Step 2: Brown the Beef

In the same skillet, add the ground beef and cook until browned. Drain excess fat. Stir in minced garlic and cook for another minute until fragrant. Add Worcestershire sauce, salt, and pepper. Remove from heat.

Step 3: Cook the Rice

In a medium saucepan, bring beef broth to a boil. Stir in white rice and reduce heat to a simmer. Cover and cook until rice is tender and has absorbed the broth, about 15–18 minutes.

Step 4: Combine and Mix

Preheat your oven to 375°F (190°C). In a large bowl, combine cooked rice, ground beef mixture, caramelized onions, and sour cream (if using). Mix until everything is well distributed.

Step 5: Assemble the Casserole

Spread the mixture evenly into a greased 9×13-inch baking dish. Top with mozzarella and Gruyère cheese.

Step 6: Bake to Perfection

Cover with foil and bake for 20 minutes. Remove foil and bake for an additional 10 minutes, or until the top is bubbly and golden brown. Let rest 5–10 minutes before serving.

How to Serve and Store French Onion Ground Beef and Rice Casserole

This casserole is at its best when served piping hot straight from the oven. The melted cheese forms a golden top layer that pairs perfectly with a crisp green salad or a side of roasted vegetables. If you want to stretch the meal further, serve with buttered dinner rolls to soak up every last bite.

Leftovers store wonderfully, making this a fantastic make-ahead meal. Once cooled, cover the baking dish with foil or transfer portions into airtight containers. It keeps well in the refrigerator for up to 4 days. To reheat, simply microwave individual servings or place the dish back in a 350°F oven until warmed through.

For freezing, portion the casserole into freezer-safe containers after baking. Label and store for up to 2 months. Thaw overnight in the fridge and reheat in the oven for the best texture.

Frequently Asked Questions

How do I caramelize onions without burning them?

Keep your heat on medium to low and stir often. Caramelizing onions takes time—about 20–25 minutes—but the slow process draws out their natural sweetness without burning.

Can I use instant rice instead of long-grain?

You can, but adjust the broth and cooking time accordingly. Instant rice cooks faster and may become mushy if overcooked.

What’s the best cheese for that classic French onion flavor?

Gruyère is ideal for authentic flavor, but Swiss or even provolone can work in a pinch.

Can I make this casserole ahead of time?

Yes! Assemble the casserole ahead, cover tightly, and refrigerate for up to 24 hours before baking. Just add 5–10 extra minutes to the baking time.

How can I make it vegetarian?

Substitute the ground beef with lentils or plant-based crumbles and use vegetable broth instead of beef broth.

Is sour cream necessary?

Not at all—it’s optional. Sour cream adds extra creaminess, but you can leave it out or replace it with Greek yogurt for a lighter touch.

Want More Casserole Ideas with Comfort Food Vibes?

If you loved this French Onion Ground Beef and Rice Casserole, you’ll want to check out these cozy, satisfying recipes next:

Million Dollar Ravioli Casserole for a cheesy, saucy pasta bake that feels ultra-indulgent.
Chicken Cordon Bleu Casserole if you’re craving creamy, crispy layers with ham and chicken.

Mexican Cornbread Casserole for a spicy twist on comfort food.
Cheesy Pizza Tater Tot Casserole for a kid-friendly dinner night everyone will rave about.
Chicken and Stuffing Casserole for that warm, holiday-inspired flavor any time of year.

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And when you try it, leave a comment to share your spin! Did you add mushrooms? Use a different cheese? I love seeing your versions and tips. Have a question? Drop it below—let’s keep the casserole love going.

French Onion Ground Beef and Rice Casserole

Author: Olivia McKenney

Total Time: 65 minutes
Yield: 6 servings

Print Recipe

Description

This French Onion Ground Beef and Rice Casserole is the ultimate comfort food, packed with savory flavor, creamy texture, and gooey cheese. Inspired by the warmth of French onion soup, this hearty dish makes an easy family dinner or perfect meal prep option.

Instructions

1. In a large skillet, melt butter over medium heat. Add sliced onions and sauté until caramelized, about 20–25 minutes. Stir frequently to avoid burning. Set aside.

2. In the same skillet, cook ground beef until browned. Drain excess fat, then add garlic, Worcestershire sauce, salt, and pepper. Cook 1 more minute. Remove from heat.

3. In a medium saucepan, bring beef broth to a boil. Stir in rice, reduce heat to low, cover, and simmer until rice is cooked and broth absorbed, about 15–18 minutes.

4. Preheat oven to 375°F (190°C). In a large bowl, mix cooked rice, beef mixture, caramelized onions, and sour cream (if using).

5. Spread mixture evenly in a greased 9×13-inch baking dish. Top with mozzarella and Gruyère cheese.

6. Cover with foil and bake for 20 minutes. Uncover and bake an additional 10 minutes or until cheese is golden and bubbly. Rest 5–10 minutes before serving.