Preheat the Oven: Preheat your oven to 425°F (220°C). Lightly grease a baking dish with nonstick spray or butter.
Combine the Ingredients: In the prepared baking dish, mix together the uncooked rice, condensed French onion soup, and condensed beef broth. Stir gently to ensure the liquids are evenly distributed.
Add the Butter: Slice the butter into even pieces and arrange them on top of the rice mixture to infuse the dish with rich, buttery flavor.
Cover and Bake: Cover the dish tightly with aluminum foil to lock in moisture. Bake in the preheated oven for 30 minutes.
Finish Baking: Remove the foil and continue baking uncovered for another 30 minutes, or until the rice is tender and the liquid is fully absorbed.
Rest and Serve: Allow the rice to rest for a few minutes after removing it from the oven. Fluff with a fork, serve warm, and enjoy!