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Savory French Onion Ground Beef and Rice Casserole Recipe

4.4 from 147 reviews

This Savory French Onion Ground Beef and Rice Casserole Delight is a warm and comforting dish combining lean ground beef, cooked white rice, and condensed French onion soup baked together with a creamy sour cream blend and topped with melty mozzarella cheese. Perfect for cozy weeknight dinners, this casserole offers a hearty, flavorful meal with a golden cheese crust and optional fresh parsley garnish, providing a satisfying balance of textures and rich, savory flavors.

Ingredients

Scale

For the Casserole

  • 1 lb Ground Beef (lean beef recommended for a healthier dish)
  • 3 cups Cooked White Rice (long grain or jasmine rice preferred)
  • 1 can Condensed French Onion Soup (store-bought or homemade)
  • 1 cup Sour Cream (or Greek yogurt as a lighter alternative)
  • 1 cup Shredded Mozzarella Cheese (Gruyère or provolone can be used for stronger flavor)
  • 2 tbsp Butter (for cooking the beef)
  • 1 tsp Onion Powder (substitute with fresh onions for more robust flavor)
  • 1 tsp Garlic Powder (fresh garlic can also be used)
  • 1 tbsp Chopped Parsley (optional, for garnish)

Instructions

  1. Preheat Oven and Prepare Baking Dish: Preheat your oven to 350°F (175°C). Generously grease a 9×13-inch baking dish to prevent the casserole from sticking during baking.
  2. Cook the Ground Beef: In a large skillet over medium heat, melt the butter. Add the ground beef and cook until browned and fully cooked through. Drain any excess fat for a lighter casserole.
  3. Season the Beef: Stir in the onion powder, garlic powder, salt, and pepper to the cooked beef. Mix thoroughly to ensure even seasoning throughout the meat.
  4. Combine Ingredients: In a mixing bowl, combine the cooked seasoned beef with the cooked white rice, condensed French onion soup, and sour cream. Stir gently until all ingredients are fully incorporated into a creamy mixture.
  5. Assemble the Casserole: Spread the beef and rice mixture evenly into the prepared baking dish. Evenly top the mixture with shredded mozzarella cheese, making sure to cover all areas.
  6. Bake the Casserole: Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the cheese topping is melted, bubbly, and golden brown.
  7. Garnish and Serve: Remove from oven and sprinkle chopped parsley over the top for a fresh burst of color and flavor. Serve warm for the best experience.

Notes

  • Use day-old rice to achieve the best texture and flavor absorption in the casserole.
  • To add a crispy cheese topping, broil the casserole for 2-3 minutes after baking, watching carefully to prevent burning.
  • Avoid overcooking the beef to keep it juicy and tender.
  • You can customize this casserole by adding sautéed mushrooms, bell peppers, or different herbs such as thyme or rosemary.
  • This casserole freezes well—cool completely, wrap tightly, and freeze for up to 2 months.
  • Reheat leftovers in the oven at 300°F until warmed through for the best texture and taste.

Keywords: French onion casserole, ground beef casserole, rice casserole, baked casserole, comfort food, easy dinner recipe, cheesy casserole, weeknight meal