French Onion Ground Beef and Rice Casserole

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If there’s a dish that brings comfort and heartiness to the dinner table without demanding hours in the kitchen, it’s the French Onion Ground Beef and Rice Casserole. This casserole takes the nostalgic flavors of French onion soup—sweet caramelized onions, rich beefy goodness, and melty cheese—and transforms them into a full, satisfying meal. With tender rice and savory ground beef baked to perfection, this is one of those meals that makes the whole house smell like home.

Perfect for a weeknight dinner, a cozy potluck, or feeding a hungry crowd, this casserole delivers everything you love about French onion flavors with a practical, family-friendly twist. You don’t need fancy ingredients or advanced cooking skills to pull it off. Just wholesome staples and a little oven time, and you’ll have something special to scoop onto plates.

Why You’ll Love This French Onion Ground Beef and Rice Casserole

This dish has all the elements of an easy-to-love meal: it’s warm, hearty, flavorful, and incredibly versatile. The beef brings a satisfying richness, the rice soaks up every drop of flavor, and the cheese melts into a blanket of golden deliciousness. It’s also a smart way to use up pantry staples while serving something that feels just a little more indulgent than your typical casserole.

Plus, cleanup is easy since it’s a one-dish wonder. You can prep it in advance, freeze it for later, or double the batch if you’ve got mouths to feed. Leftovers? Even better the next day.

What Kind of Onion Soup Mix Should I Use?

For the most authentic flavor, a classic dry French onion soup mix works beautifully. It adds depth and savory balance without the need to caramelize onions from scratch. You can find it in nearly any grocery store in the soup aisle, often under brands like Lipton or store-label equivalents. If you’re sensitive to salt or additives, look for a low-sodium or organic option—or even make your own with a blend of dried onion flakes, beef bouillon, garlic powder, and parsley.

Now that we’ve set the flavor stage, let’s move on to the ingredients and how to bring this irresistible casserole together.

Ingredients for the French Onion Ground Beef and Rice Casserole

This dish is a beautiful marriage of familiar pantry staples and bold, cozy flavor. Each ingredient plays an important role in creating that crave-worthy French onion profile while keeping things simple and comforting.

• Ground Beef – Brings rich, meaty flavor and heartiness to the casserole. Opt for leaner beef if you prefer less grease.
• White Rice – Soaks up all the broth and oniony goodness, becoming tender and full of flavor. Long grain white rice works best.
• French Onion Soup Mix – The flavor powerhouse that delivers the signature sweet-savory onion essence with minimal effort.
• Beef Broth – Deepens the savory profile and ensures the rice cooks to fluffy perfection.
• Cream of Mushroom Soup – Adds creaminess and depth while binding the casserole together.
• Worcestershire Sauce – Provides a tangy umami kick that enhances the meatiness.
• Shredded Mozzarella Cheese – Melts into a golden, gooey topping. Adds that irresistible cheesy pull with every bite.
• Butter – A small amount melted over the top brings added richness and helps the cheese brown beautifully.

How To Make the French Onion Ground Beef and Rice Casserole

Step 1: Brown the Beef

In a large skillet over medium heat, cook the ground beef until browned and no longer pink. Drain excess fat, then season lightly with salt and pepper.

Step 2: Mix the Ingredients

In a large mixing bowl, combine the browned beef, uncooked white rice, French onion soup mix, beef broth, cream of mushroom soup, and Worcestershire sauce. Stir until well combined.

Step 3: Assemble the Casserole

Transfer the mixture to a greased 9×13-inch baking dish. Spread it evenly. Cover tightly with foil to keep moisture in during baking.

Step 4: Bake

Bake in a preheated 350°F oven for 50 to 60 minutes, or until the rice is tender and most of the liquid is absorbed.

Step 5: Add the Cheese

Remove the foil and sprinkle mozzarella cheese evenly over the top. Dot with small pieces of butter.

Step 6: Brown the Top

Return to the oven uncovered and bake for an additional 10 minutes, or until the cheese is melted and golden.

Let the casserole sit for 5 to 10 minutes before serving so everything sets nicely. Time to dig in!

Serving and Storing Your French Onion Ground Beef and Rice Casserole

This casserole is comfort food in its truest form, and it easily serves 6 to 8 people, making it perfect for family dinners or casual get-togethers. The flavors meld beautifully the longer it rests, so don’t hesitate to make it a few hours ahead of time and simply reheat before serving.

If you have leftovers, they store wonderfully in an airtight container in the fridge for up to 4 days. Reheat in the oven or microwave until warmed through. You can also freeze individual portions for quick weeknight meals—just make sure to wrap them tightly to prevent freezer burn.

What to Serve With French Onion Ground Beef and Rice Casserole?

Garlic Green Beans

A fresh, snappy side that cuts through the richness of the casserole with a burst of garlicky brightness.

Buttery Dinner Rolls

Soft, warm rolls are perfect for scooping up every last bit of cheesy rice and beef.

Roasted Carrots with Thyme

These sweet-savory roasted carrots bring color and a hint of earthiness to your plate.

Caesar Salad

A crisp Caesar with creamy dressing and crunchy croutons adds a refreshing contrast.

Creamy Coleslaw

For a cool and tangy balance, coleslaw is a great make-ahead side that holds up well.

Sauteed Mushrooms

They complement the earthy flavors of the French onion soup mix and elevate the umami richness.

Apple Cranberry Walnut Salad

A little sweetness and crunch from apples and cranberries makes this salad a surprising but delightful pairing.

Corn on the Cob

Simple and nostalgic, corn on the cob brings a natural sweetness that pairs well with the savory bake.

Want More Casserole Ideas?

If you enjoyed this French Onion Ground Beef and Rice Casserole, you’ll probably love diving into these other comforting, flavor-packed dinners:

• Try our Creamy Beef and Shells Recipe when you’re craving a rich and velvety pasta dish.
• This Stovetop Creamy Ground Beef Pasta is perfect when you need something fast and filling.
• Go for baked cheesy goodness with Cheesesteak Tortellini in Rich Provolone Sauce – it’s like Philly meets Italian night.
• One-pot fans will enjoy our Creamy Ground Beef Alfredo Pasta for a no-fuss creamy dinner.
• For a hearty twist, the Cheesy Baked Tortellini with Meat Sauce is always a crowd-pleaser.

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📌 Save this recipe to your Pinterest dinner board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you add mushrooms or use a different cheese? Maybe a sprinkle of herbs?

I love hearing how others make these recipes their own. Questions are welcome too—let’s help each other cook smarter.

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