HomeDinnerFrench Onion Ground Beef Rice Casserole Recipe

French Onion Ground Beef Rice Casserole Recipe

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French Onion Ground Beef Rice Casserole: A Hearty, Cheesy, One-Dish Classic

Comfort food doesn’t have to be complicated. In fact, the best dishes are often those that bring together simple ingredients in a way that feels like a warm hug on a cold night. The French Onion Ground Beef Rice Casserole is exactly that kind of meal — rustic, rich, and satisfying, yet incredibly easy to throw together with pantry staples and a few fresh touches.

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Inspired by the deep, savory flavors of classic French onion soup, this casserole takes that unmistakable combination of caramelized onions, beefy richness, and melty cheese and layers it with tender rice for a complete one-dish dinner. It’s the kind of meal that tastes like it simmered all day, but comes together with just a bit of prep and oven time — perfect for busy weeknights or lazy Sundays alike.

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At the heart of this dish is ground beef, a versatile and affordable protein that cooks quickly and absorbs flavor beautifully. Rice adds bulk and texture, while onions, deeply caramelized or enhanced with French onion soup for convenience, provide the signature sweet-savory profile. It’s all brought together with a creamy binding (like sour cream or condensed soup), topped with a generous layer of melted cheese, and baked until bubbly and golden.

But this is more than just a casserole — it’s a gateway to a deeply comforting cooking experience. It’s a dish you’ll want to keep in your rotation not only for how easy it is to make, but also for how universally it’s loved. Kids devour it, adults appreciate its depth of flavor, and leftovers reheat like a dream.

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Whether you’re feeding a family, prepping meals for the week, or just craving something deeply satisfying and rich in flavor, this French Onion Ground Beef Rice Casserole delivers. Once you master this recipe, it will become a go-to in your kitchen — cozy, reliable, and incredibly craveable.

Section 1: Ingredients – Selecting and Preparing Your Components

Before you start cooking, it’s essential to gather and prepare all ingredients. This not only streamlines the process but ensures the best texture and flavor.

Core Ingredients

  • Ground beef: 1.5 pounds (preferably 80/20 for flavor and moisture)

  • Onions: 3 large yellow onions, thinly sliced

  • Butter or oil: 2 tablespoons (for caramelizing onions)

  • Garlic: 3 cloves, minced

  • Beef broth or French onion soup: 1½ cups (for depth of flavor and moisture)

  • Cooked rice: 2 cups (preferably long-grain white or brown rice, cooked and cooled)

  • Creamy binder: 1 cup sour cream or 1 can (10.5 oz) condensed cream of mushroom or cream of celery soup

  • Worcestershire sauce: 1 tablespoon (enhances umami)

  • Salt and pepper: To taste

  • Cheese: 2 cups shredded Gruyère, Swiss, or mozzarella (divided)

  • Fresh herbs: 1 tablespoon chopped parsley or thyme (optional for freshness)

Section 2: Preparing the Onions – The Heart of French Onion Flavor

Caramelizing onions is key to developing that rich, sweet, and savory base. This step requires patience but is essential.

Step 1: Slice and Caramelize the Onions

  1. Heat 2 tablespoons butter or oil in a large skillet over medium-low heat.

  2. Add thinly sliced onions, stirring to coat in fat.

  3. Cook slowly, stirring every few minutes, for 30–40 minutes until onions are golden brown and soft.

  4. Season lightly with salt to help draw out moisture and enhance sweetness.

  5. Optional shortcut: Add a teaspoon of sugar to accelerate caramelization.

  6. Add minced garlic in the last 2 minutes and cook until fragrant.

  7. Remove from heat.

Tip: If pressed for time, use 1½ cups of good-quality French onion soup or caramelized onion dip as a shortcut to achieve flavor.

Section 3: Cooking the Ground Beef – Building a Meaty Base

Step 2: Brown the Ground Beef

  1. In a separate skillet over medium-high heat, add the ground beef.

  2. Break the meat apart with a spatula.

  3. Cook until fully browned and no longer pink, about 6–8 minutes.

  4. Season with salt, pepper, and 1 tablespoon Worcestershire sauce.

  5. Drain excess fat if necessary.

  6. Stir in ½ cup of beef broth or French onion soup to add moisture and flavor.

  7. Let simmer for 2 minutes.

  8. Remove from heat.

Section 4: Cooking and Preparing the Rice

Step 3: Cook the Rice (If Not Using Pre-Cooked)

  1. Rinse 1 cup of long-grain rice under cold water to remove excess starch.

  2. In a medium pot, combine rice with 2 cups water and a pinch of salt.

  3. Bring to a boil, then reduce heat to low.

  4. Cover and simmer for 15–20 minutes until tender and water is absorbed.

  5. Fluff with a fork and let cool slightly.

Tip: Day-old rice works well because it’s drier and won’t clump.

Section 5: Assembling the Casserole – Bringing It All Together

Step 4: Combine Ingredients

  1. Preheat oven to 350°F (175°C).

  2. In a large mixing bowl, combine:

    • Caramelized onions

    • Cooked ground beef

    • Cooked rice

    • Sour cream or condensed soup

    • Remaining beef broth or French onion soup (about 1 cup)

    • 1 cup shredded cheese

    • Fresh herbs (if using)

  3. Mix gently but thoroughly to combine. Adjust salt and pepper to taste.

Step 5: Transfer and Top

  1. Lightly grease a 9×13-inch baking dish.

  2. Spread the mixture evenly in the dish.

  3. Sprinkle remaining 1 cup of shredded cheese evenly over the top.

Section 6: Baking the Casserole – Finishing with Golden Perfection

Step 6: Bake

  1. Place the casserole in the preheated oven.

  2. Bake uncovered for 30–40 minutes, until the casserole is bubbly and the cheese on top is melted and golden brown.

  3. If cheese browns too quickly, loosely cover with foil.

Section 7: Resting and Serving

Step 7: Let Rest Before Serving

  1. Remove casserole from oven.

  2. Allow it to rest for 10–15 minutes to let flavors meld and the casserole to set.

  3. Garnish with extra fresh herbs if desired.

  4. Serve warm with a fresh green salad or steamed vegetables.

Section 8: Variations, Tips, and Storage

  • Vegetable add-ins: Add mushrooms, bell peppers, or spinach for extra nutrients.

  • Cheese swaps: Use cheddar, Monterey Jack, or even blue cheese for different flavor profiles.

  • Gluten-free: Use gluten-free condensed soup or sour cream and check Worcestershire sauce ingredients.

Yield: 6

French Onion Ground Beef Rice Casserole Recipe

Comfort food doesn’t have to be complicated. In fact, the best dishes are often those that bring together simple ingredients in a way that feels like a warm hug on a cold night. The French Onion Ground Beef Rice Casserole is exactly that kind of meal — rustic, rich, and satisfying, yet incredibly easy to throw together with pantry staples and a few fresh touches.

Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes

Ingredients

  • 1 lb (450g) ground beef
  • 1 large onion, thinly sliced
  • 3 cloves garlic, minced
  • 1 tbsp olive oil or butter
  • 1 tsp dried thyme
  • 1 tsp Worcestershire sauce
  • 1 cup long grain white rice (uncooked)
  • 2 ½ cups beef broth (low sodium preferred)
  • 1 cup shredded Swiss cheese (or Gruyère for more authentic French onion flavor)
  • 1 cup shredded mozzarella or cheddar cheese (for melting)
  • Salt and pepper, to taste
  • Fresh parsley or thyme for garnish (optional)

Instructions

  1. Caramelize the onions:
    Heat olive oil or butter in a large skillet over medium-low heat.
    Add the sliced onions and cook slowly, stirring occasionally, until golden brown and caramelized — about 20 minutes.
    Add garlic and cook for 1 more minute. Remove half of the onions for topping later (optional).
  2. Cook the beef:
    Push onions to the side and add ground beef to the skillet.
    Cook over medium heat, breaking it up, until browned and cooked through.
    Drain excess fat if necessary.
    Stir in Worcestershire sauce, thyme, salt, and pepper.
  3. Combine with rice and broth:
    Stir uncooked rice into the beef and onion mixture.
    Pour in beef broth and bring to a boil.
    Reduce heat to low, cover, and simmer for 18-20 minutes until rice is tender and liquid is absorbed.
  4. Assemble the casserole:
    Preheat oven to 375°F (190°C).
    Transfer the beef, onion, and rice mixture to a greased casserole dish.
    Sprinkle the reserved caramelized onions over the top.
    Add shredded cheeses evenly on top.
  5. Bake:
    Bake uncovered for 15-20 minutes, until cheese is melted and bubbly, and edges are golden.
  6. Serve:
    Garnish with fresh parsley or thyme if desired.
    Serve hot and enjoy!

Notes

  • Rice substitute: You can use brown rice, but increase cooking time and liquid accordingly.
  • Make ahead: Prepare up to step 4 and refrigerate. Add cheese topping and bake just before serving.
  • Add veggies: Toss in mushrooms or bell peppers with onions for extra flavor and nutrition.
  • Cheese swap: Gruyère or Swiss is classic, but any melty cheese works well.

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