This post may contain affiliate links learn more
Rich, savory, and perfectly caramelized, this French Onion Rice Casserole is a delightful side dish that brings comfort to every bite. Imagine the deep, golden sweetness of slow-cooked onions paired with fluffy, flavorful rice – it’s like French onion soup met your favorite casserole dish and made magic! Whether you’re looking for a cozy family dinner side or an impressive dish to bring to a potluck, this recipe has you covered. Ready to take your taste buds on a journey? Let’s dive in!
Want More Recipes Like This?
Subscribe to our newsletter, and you’ll get delicious recipes delivered straight to your inbox!
Why You’ll Love This French Onion Rice Casserole
- Incredible Depth of Flavor: The caramelized onions infuse the rice with a rich, savory sweetness that’s absolutely irresistible.
- Versatility at Its Best: It’s the perfect side dish for roasted meats, grilled vegetables, or even a simple green salad.
- Comfort Food, Elevated: This isn’t just any rice dish. It’s creamy, flavorful, and downright comforting.
What Does It Taste Like?
Think of the comforting, savory richness of French onion soup, but in rice form. The onions are caramelized to perfection, bringing a sweet, golden depth to each bite. Paired with the warmth of garlic powder and the umami from the beef broth, every spoonful is bursting with flavor. The fresh parsley on top adds a hint of brightness, balancing the richness perfectly.
Benefits of This Recipe
- Easy to Make: With just a few simple steps, you’ll have a side dish that tastes like you’ve been cooking all day.
- Budget-Friendly: Simple pantry staples come together to create a luxurious-tasting dish.
- Crowd-Pleaser: This casserole is perfect for family gatherings, potlucks, or even as a cozy weeknight dinner side.
Ingredients You’ll Need
- 1 cup long-grain white rice – For a fluffy, non-sticky texture.
- 2 large onions, thinly sliced – The star of the dish! Caramelized to golden perfection.
- 1/4 cup unsalted butter – Adds richness and helps with caramelization.
- 1 tablespoon olive oil – Prevents the butter from burning.
- 2 cups beef broth – For a deep, savory flavor (use vegetable broth for a lighter option).
- 1 teaspoon garlic powder – Adds warmth and depth.
- Salt and black pepper to taste – Enhances all the flavors.
- Fresh parsley, chopped (for garnish) – Adds a fresh pop of color and flavor.
Necessary Tools for Preparation
- Large skillet – For caramelizing the onions to golden perfection.
- Medium saucepan – To cook the rice.
- Wooden spoon – For stirring without breaking the rice grains.
- Sharp knife and cutting board – To thinly slice the onions.

Ingredient Additions and Substitutions
- Cheese Lovers: Stir in some shredded Gruyère or Swiss cheese before serving for a creamy, cheesy twist!
- Herb Variation: Swap parsley for thyme or rosemary for an earthy flavor profile.
- Make It a Meal: Add cooked chicken, sausage, or mushrooms to turn this side dish into a main course.
- Low-Carb Option: Substitute the white rice with cauliflower rice for a lighter version.
How to Make French Onion Rice Casserole
- Caramelize the Onions:
- In a large skillet, melt the butter with olive oil over medium heat.
- Add the sliced onions and cook, stirring occasionally, until they are caramelized and golden brown, about 20-25 minutes. Season with salt and pepper to enhance the flavor.
- Prepare the Rice:
- Rinse the rice under cold water until the water runs clear. This removes excess starch, ensuring fluffy rice.
- In a medium saucepan, bring the beef broth to a boil.
- Add the rinsed rice, cover, and reduce the heat to low.
- Simmer for about 15-18 minutes, or until the rice is tender and the liquid is absorbed.
- Combine and Season:
- Once the rice is cooked, stir in the caramelized onions and garlic powder. Mix well, ensuring all the rice is coated with the rich onion flavor.
- Adjust seasoning with additional salt and pepper if needed.
- Serve and Garnish:
- Transfer the mixture to a serving bowl.
- Garnish with freshly chopped parsley for a burst of color and flavor.
What to Serve with French Onion Rice Casserole
- Grilled Chicken or Steak: The rich, savory rice complements juicy, grilled meats perfectly.
- Roasted Vegetables: Pair it with roasted Brussels sprouts, asparagus, or carrots for a balanced meal.
- Green Salad: A fresh, crisp salad cuts through the richness beautifully.
- French Baguette: For the ultimate French-inspired meal, serve with warm, crusty bread.
Tips for Making the Perfect French Onion Rice
- Patience is Key for Caramelizing: Don’t rush the onions! Slow-cooking them is what brings out that deep, sweet flavor.
- Rinse Your Rice: This removes excess starch, ensuring fluffy, separate grains.
- Season As You Go: Layering the seasoning enhances the overall flavor of the dish.
Storage Instructions
- Refrigerator: Store leftovers in an airtight container for up to 3 days.
- Freezer: This dish freezes well! Store in a freezer-safe container for up to 2 months.
- Reheating Tips: Reheat in the microwave or on the stovetop with a splash of broth to keep it moist.
Frequently Asked Questions (FAQ)
1. Can I use brown rice instead of white rice?
Absolutely! Just adjust the cooking time and liquid according to the package instructions.
2. Can I make this dish ahead of time?
Yes! You can prepare the entire dish in advance and reheat it before serving. It actually tastes even better the next day as the flavors deepen!
3. What if I don’t have beef broth?
You can use vegetable broth or even chicken broth as a substitute. Just note that it will slightly change the flavor profile.

Wrap-Up: Why You Should Try This Recipe Today
This French Onion Rice Casserole isn’t just another side dish – it’s a flavor-packed experience. From the sweet caramelized onions to the savory broth-soaked rice, every bite is pure comfort. Plus, it’s so versatile that it’ll quickly become a staple at your dinner table. Ready to give it a go? You won’t regret it – I promise! And when you do, let me know how it turned out. I’d love to see your creations!
Craving More Comfort Food?
Check out these other delightful recipes:
- Cheesy Chicken Enchilada Casserole – A cheesy, flavorful dish that’s perfect for a crowd.
- Twice Baked Potato Casserole – Loaded with creamy potatoes and cheese.
- Creamy Tortellini Alfredo Casserole – Rich, creamy, and downright irresistible.
Did You Make This Recipe?
I’d love to see your version! Leave a review below, share a photo on Pinterest, or tag me on Pinterest!
Nutritional Information (Per Serving)
- Calories: ~250
- Protein: 4g
- Carbs: 38g
- Fat: 10g
- Fiber: 2g
- Sugar: 4g
Enjoy your comforting bowl of French Onion Rice Casserole! 🍚🧅


French Onion Rice Casserole 🍚🧅
- Total Time: 55 minutes
- Yield: 4 servings 1x
- Diet: Vegetarian
Description
Rich, savory, and perfectly caramelized, this French Onion Rice Casserole is the ultimate comfort food side dish. Fluffy long-grain rice meets golden-brown caramelized onions for a flavorful experience that pairs beautifully with any main course. Whether you’re hosting a dinner party or craving a cozy weeknight meal, this easy-to-make casserole will be a hit!
Ingredients
- 1 cup long-grain white rice
- 2 large onions, thinly sliced
- 1/4 cup unsalted butter
- 1 tablespoon olive oil
- 2 cups beef broth (or vegetable broth for a lighter option)
- 1 teaspoon garlic powder
- Salt and black pepper to taste
- Fresh parsley, chopped (for garnish)
Instructions
- Caramelize the Onions:
- In a large skillet, melt the butter with olive oil over medium heat.
- Add the sliced onions and cook, stirring occasionally, until caramelized and golden brown, about 20-25 minutes. Season with salt and pepper.
- Prepare the Rice:
- Rinse the rice under cold water until the water runs clear to remove excess starch.
- In a medium saucepan, bring the beef broth to a boil.
- Add the rinsed rice, cover, and reduce the heat to low.
- Simmer for about 15-18 minutes, or until the rice is tender and the liquid is absorbed.
- Combine and Season:
- Once the rice is cooked, stir in the caramelized onions and garlic powder. Mix well.
- Adjust seasoning with additional salt and pepper if needed.
- Serve and Garnish:
- Transfer the mixture to a serving bowl.
- Garnish with freshly chopped parsley for a burst of color and flavor.
Notes
- Make It Cheesy: Stir in shredded Gruyère or Swiss cheese for a cheesy twist.
- Vegetarian Option: Use vegetable broth instead of beef broth.
- Storage: Store leftovers in an airtight container in the fridge for up to 3 days.
- Reheating Tip: Reheat with a splash of broth to keep the rice moist and flavorful.
- Prep Time: 10 minutes
- Cook Time: 45 minutes
- Category: Side Dish
- Method: Stovetop and Casserole
- Cuisine: French-Inspired
Nutrition
- Serving Size: 1 cup
- Calories: 250
- Sugar: 4g
- Sodium: 300mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 38g
- Fiber: 2g
- Protein: 4g
- Cholesterol: 20mg