
Preheat the oven to 425°F. Spray an 8x8-inch baking dish with cooking spray.
Add rice, beef broth, and condensed French onion soup to the baking dish, and stir to combine.
Add sliced butter on top. Cover with foil.
Place in the oven and bake for 30 minutes. Uncover and bake an additional 30 minutes until the rice is tender.
Serve immediately.