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French Onion Ground Beef and Rice Casserole

French Onion Ground Beef and Rice Casserole

This French Onion Ground Beef and Rice Casserole is a deeply comforting and satisfying dish, blending classic French onion soup flavors with a hearty cheesy beef and rice bake. It's an easy-to-prepare meal that transforms simple ingredients into something special without the fuss. The recipe features perfectly seasoned ground beef, cooked rice, and a creamy sauce, all topped with a generous layer of melted mozzarella.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Calories: 400
Ingredients Equipment Method Notes

Ingredients
  

Ingredients
  • 1 small yellow onion, chopped
  • 1 lb ground beef
  • 3 cups cooked white rice
  • 1 can (10.5 oz) condensed French onion soup
  • 1 packet (1 oz) Dry Onion Soup/Dip Mix
  • 1 cup sour cream
  • 1 tbsp Worcestershire sauce
  • 2 cups shredded mozzarella cheese
  • 2 tbsp butter
  • 1 tsp garlic powder
  • 1/2 tsp black pepper
  • 1/2 cup Beef Broth (optional)
  • 1 tsp Onion Powder

Equipment

  • 9x13 inch baking dish
  • Large skillet
  • Large bowl

Method
 

Instructions
  1. Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish.
  2. In a large skillet, melt the butter over medium heat. Add the ground beef and chopped fresh onion. Cook, breaking up the beef, until it's browned and the onion is soft. Drain off any excess fat.
  3. Stir the dry onion soup mix, Worcestershire sauce, garlic powder, and onion powder into the beef mixture until well combined.
  4. In a separate large bowl, combine the seasoned beef mixture, cooked rice, condensed French onion soup, optional beef broth, and sour cream. Stir until evenly mixed.
  5. Spread the mixture into the prepared baking dish in an even layer. Sprinkle the shredded mozzarella cheese over the entire top.
  6. Bake, uncovered, for 25 to 30 minutes, or until the cheese is melted, bubbly, and starting to turn golden brown.
  7. Let the casserole rest for a few minutes before serving. Garnish with fresh parsley if desired.

Notes

For the best flavor, properly brown the ground beef and cook the fresh onion until soft before draining the excess fat. Using freshly shredded cheese will result in a smoother melt. This dish can be assembled up to 24 hours ahead and refrigerated; add 10-15 minutes to the baking time. Leftovers can be stored in the refrigerator for up to 4 days. The casserole also freezes well for up to 3 months.