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The Ultimate Easy French Onion Butter Rice Casserole

A spoonful of creamy french onion butter rice topped with melted, browned cheddar cheese being lifted from a white baking dish.

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Take a simple side dish to the next level with this French onion butter rice recipe. Rich, savory flavors blend beautifully with fluffy rice to create a comforting dish that pairs perfectly with chicken or beef.

Ingredients

Scale
  • 1 (10.5 ounce) can condensed cream of mushroom soup
  • 1 (10.5 ounce) can condensed French onion soup
  • 1 cup beef broth
  • 1 cup uncooked long-grain white rice
  • 1 cup frozen mixed vegetables (optional)
  • 1 stick (8 tablespoons) unsalted butter, cut into pieces
  • 1 cup shredded sharp cheddar cheese (for topping)

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease a 9×13 inch baking dish.
  2. In a large bowl, whisk together the cream of mushroom soup, French onion soup, and beef broth until smooth.
  3. Stir in the uncooked rice and the frozen mixed vegetables, if using. Pour this mixture into the prepared baking dish.
  4. Distribute the pieces of butter evenly over the top of the rice mixture.
  5. Cover the baking dish tightly with aluminum foil.
  6. Bake for 50 minutes.
  7. Remove the foil. Stir the rice gently to incorporate the melted butter and liquids.
  8. Sprinkle the shredded cheddar cheese evenly over the top.
  9. Return the dish to the oven, uncovered, and bake for another 10 to 15 minutes, or until the cheese is melted and bubbly and the rice is tender.
  10. Let the casserole stand for 5 minutes before serving.

Notes

  • For a deeper onion flavor, sauté one thinly sliced yellow onion in 1 tablespoon of butter before adding it to the soup mixture.
  • If you do not have cream of mushroom soup, you can substitute it with cream of chicken soup for a similar creamy texture.
  • This savory rice side dish is excellent made ahead; cover and refrigerate for up to 24 hours, then add 10 minutes to the covered baking time when ready to cook.

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