This French Onion Ground Beef and Rice Casserole is the ultimate comfort food—rich, savory, and packed with deep, caramelized onion flavors. It’s an easy, budget-friendly meal that’s perfect for busy weeknights or cozy family dinners.
With just a handful of pantry staples, this casserole transforms into a delicious, cheesy dish that will have everyone asking for seconds. Plus, it bakes in one dish, making cleanup a breeze!
Let’s dive into the recipe and make this incredibly satisfying casserole together.
Why You’ll Love This Recipe
✅ One-Pan Wonder – Everything bakes in one dish, cutting down on cleanup!
✅ Rich French Onion Flavor – Inspired by the classic soup, this dish is bursting with deep umami goodness.
✅ Hearty and Filling – A perfect combination of beef, rice, and cheese for a complete meal.
✅ Easy and Affordable – Made with simple, budget-friendly ingredients.
✅ Customizable – Swap ingredients to suit your taste or dietary needs!
What Does This Casserole Taste Like?
Imagine the deep, caramelized flavors of French onion soup, combined with the heartiness of savory ground beef and rice. The beef is juicy, the rice soaks up all the rich broth, and the Swiss cheese on top melts into a gooey, golden crust. Every bite is a mix of comforting flavors that make you feel right at home.
Ingredients
Here’s what you’ll need to make this delicious casserole:
- 1 pound ground beef – Adds richness and protein.
- 1 cup long-grain white rice – Absorbs all the savory flavors.
- 1 can (10.5 oz) French onion soup – Infuses the dish with deep onion flavor.
- 1 can (14.5 oz) diced tomatoes, undrained – Adds a touch of acidity and sweetness.
- 1 cup beef broth – Keeps everything moist and flavorful.
- 1 medium onion, sliced – Enhances the onion flavor.
- 2 cloves garlic, minced – Adds an aromatic depth.
- 1 tablespoon olive oil – Helps sauté the onions and garlic.
- 1 teaspoon Worcestershire sauce – Gives a rich umami kick.
- 1 teaspoon dried thyme – A warm, earthy herb that complements the dish.
- Salt and pepper to taste – Enhances all the flavors.
- 1 cup shredded Swiss cheese – Melts beautifully for a creamy finish.
Tools You’ll Need
✔ Large skillet
✔ 9×13-inch baking dish
✔ Wooden spoon or spatula
✔ Aluminum foil
✔ Oven
Ingredient Additions & Substitutions
💡 Want to customize your casserole? Try these swaps!
- Swap Swiss cheese → Use cheddar, mozzarella, or provolone for a different cheesy finish.
- Use brown rice → If you prefer whole grains, increase the cooking time by 10–15 minutes.
- Make it creamier → Stir in ½ cup sour cream before baking for a richer texture.
- Add veggies → Throw in mushrooms, bell peppers, or peas for extra nutrition.
- Make it spicy → Add a pinch of red pepper flakes or diced jalapeños for a little kick.
How to Make French Onion Ground Beef and Rice Casserole
Step 1: Preheat & Prep
Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish to prevent sticking.
Step 2: Sauté the Onions & Garlic
Heat 1 tablespoon olive oil in a large skillet over medium heat. Add the sliced onion and sauté for 5 minutes until soft. Add minced garlic and cook for 1 more minute until fragrant.
Step 3: Brown the Beef
Add the ground beef to the skillet. Cook, breaking it apart with a spatula, until browned (5-7 minutes). Drain any excess fat.
Step 4: Mix in the Liquids & Rice
Stir in the French onion soup, diced tomatoes (with juice), beef broth, Worcestershire sauce, dried thyme, salt, and pepper. Bring to a simmer.
Add the uncooked rice, stirring well to combine.
Step 5: Bake the Casserole
Transfer the mixture to your prepared baking dish. Cover tightly with aluminum foil and bake for 30 minutes.
Step 6: Add the Cheese & Finish Baking
After 30 minutes, remove the foil. Sprinkle shredded Swiss cheese evenly on top and bake 10-15 more minutes until the cheese is melted and bubbly.
Step 7: Cool & Serve
Let the casserole rest for 5 minutes before serving. This allows the rice to absorb all the delicious flavors. Enjoy!
What to Serve with This Casserole
This casserole is already a complete meal, but you can pair it with:
🥗 Side Salad – A fresh green salad with a light vinaigrette.
🥖 Crusty Bread – Perfect for scooping up every last bite.
🥦 Steamed Veggies – Broccoli, green beans, or roasted carrots.
🍷 Wine Pairing – A medium-bodied red wine like Merlot or a dry white wine like Chardonnay.
Tips for the Best Casserole
✔ Use long-grain rice – It holds up better and doesn’t get mushy.
✔ Let it rest before serving – This helps the flavors meld together.
✔ Want a crispy top? – Broil for the last 2–3 minutes until golden brown.
✔ Double the recipe – This freezes well, so make extra for later!
Storage Instructions
🧊 To Store: Keep leftovers in an airtight container in the fridge for up to 4 days.
🔥 To Reheat: Microwave individual portions or bake at 350°F for 15 minutes until warm.
❄️ To Freeze: Cool completely, then wrap tightly in plastic wrap and foil. Freeze for up to 3 months. Thaw overnight in the fridge before reheating.
Frequently Asked Questions
Can I use brown rice instead of white rice?
Yes! Brown rice takes longer to cook, so increase the baking time by 10-15 minutes and check for doneness.
Can I make this casserole ahead of time?
Absolutely! Assemble everything up to Step 5, cover, and refrigerate overnight. Bake when ready.
What’s the best cheese substitute for Swiss?
Provolone, gruyère, or even cheddar work beautifully.
Can I make this casserole in a slow cooker?
Yes! Brown the beef first, then add everything to your slow cooker. Cook on LOW for 5-6 hours or HIGH for 3-4 hours.
Final Thoughts: The Perfect Cozy Meal!
This French Onion Ground Beef and Rice Casserole is everything you love about French onion soup but heartier, cheesier, and perfect for feeding a crowd. It’s easy to make, full of flavor, and a guaranteed hit with your family.
If you try this recipe, let me know in the comments! Don’t forget to pin this on Pinterest and share your delicious creations!
📌 Love easy casseroles? Try these next:
🥘 Cheesy Beef and Rice Casserole
🍗 Chicken and Wild Rice Bake
🥔 Loaded Baked Potato Casserole
Happy cooking! 🍽️✨
