01 -
Preheat oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish to prevent sticking.
02 -
In a large skillet over medium heat, add olive oil and cook diced onion until softened, about 3 to 4 minutes.
03 -
Add ground beef to the skillet. Cook until fully browned, then season with salt and pepper. Drain excess fat.
04 -
In a large bowl, stir together the uncooked rice, cream of mushroom soup, French onion soup, and beef broth until evenly blended.
05 -
Add the cooked ground beef and onion mixture to the bowl. Mix thoroughly to combine.
06 -
Spread the mixture evenly into the prepared baking dish. Cover tightly with aluminum foil.
07 -
Bake for 60 minutes to allow the rice to fully cook and flavors to blend.
08 -
Remove foil, sprinkle shredded mozzarella cheese over the surface, and return to oven uncovered for 10 to 15 minutes until cheese is melted and bubbly.
09 -
Allow casserole to stand for 5 minutes before serving. Garnish with chopped parsley if desired.