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Dinner · Part 2 of 3: Instructions

One-Pan French Onion Ground Beef and Rice Casserole Step-by-step instructions

A steaming, cheesy French onion beef and rice casserole in a glass baking dish.
Prep
Cook
Total
Serves
6
Includes 5 min resting

Before you start

Before beginning, ensure all ingredients are measured and ready. Slice the onions thinly to ensure they cook evenly and integrate well with the ground beef. Preheat the oven to 375°F (190°C) so it is ready for the casserole.

Prepare a clean workspace, keeping the raw beef separate from other ingredients until it is fully cooked in the skillet to maintain food safety standards throughout the process.

Ingredients at a glance (6)
  • 1 lb ground beef
  • 2 cups yellow onions, sliced
  • 1 cup long-grain white rice, uncooked
  • 2 1/2 cups beef broth
  • 1 1/2 cups shredded gruyere cheese
  • fresh parsley, chopped, for serving

Instructions

Searing the beef and onions

  1. Prepare the beef and onions
    Heat a large skillet over medium-high heat. Add the ground beef and cook until browned, breaking it up with a spatula. Add the sliced onions and sauté until they are soft and translucent, ensuring the beef reaches an internal temperature of 160°F (71°C).
    Look for The beef should be fully browned and the onions softened.
    Safe temperature 160°F (71°C) internal temperature (ground meat)
    Tip Do not rush the onions; caramelizing them slightly adds depth to the dish.

The beef should be completely browned with no pink remaining, and the onions should be soft, sweet, and slightly golden. The skillet should smell savory and aromatic, indicating that the flavors have begun to develop.

Ensure the beef reaches the required temperature before moving to the next stage of assembly to guarantee a safe and delicious result.

Assembling the ingredients

  1. Assemble the casserole
    Transfer the cooked beef and onion mixture into a glass baking dish. Stir in the uncooked rice and pour the beef broth over the top, spreading everything into an even layer to ensure the rice is fully submerged.
    Look for The rice should be evenly distributed and covered by the broth.
    Tip Ensure the rice is fully covered by liquid so it cooks evenly in the oven.

The rice should be evenly spread within the baking dish, fully coated with the beef and onion mixture. The broth should just cover the rice, providing enough liquid for steaming. The mixture should appear cohesive and well-distributed, with no dry pockets of rice, which is crucial for uniform cooking in the oven.

Baking to perfection

  1. Bake and garnish
    Cover the dish and bake in a preheated oven at 375°F (190°C) for 30 to 35 minutes, or until the rice is tender. Remove the cover, sprinkle with shredded gruyere cheese, and bake for another 5 minutes until melted and golden. Top with fresh parsley before serving.
    Look for The cheese should be bubbly and golden brown on top.
    Tip Let the casserole rest for 5 minutes after removing from the oven to allow the juices to settle.

The casserole is ready when the rice is perfectly tender and has absorbed the broth. The cheese should be melted into a gooey, golden layer that covers the entire surface. The edges of the casserole should be slightly crisp, and the entire dish should be hot and fragrant, signaling that it is ready to be removed from the oven.

Common mistakes

Avoid overcrowding the skillet when browning the beef, as this can cause it to steam rather than sear, leading to less flavor development. Do not skip the resting time, as the rice needs a few minutes to absorb the remaining liquid and settle.

Ensure the rice is fully submerged in the broth before baking; any dry grains on top will remain hard. Finally, avoid using too much cheese, which can make the dish overly oily.

How to tell it’s done

The casserole is done when the rice is tender and the beef is fully cooked to 160°F (71°C). The liquid should be absorbed, leaving the casserole moist but not soupy.

The cheese on top should be melted, bubbling, and golden brown. Let the dish rest for at least 5 minutes before serving to ensure the structure holds together when lifted with a spatula for a clean portion.

  • Ground meat: 160°F (71°C) in the thickest part

Coming up in Part 3: common questions

  • Can this casserole be made without cheese?
  • What is the best way to reheat leftovers?
  • Can brown rice be used instead of white rice?

Also in Part 3: variations (Mushroom Onion Beef, Spicy French Onion), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)