Can I make French Onion Rice ahead of time?
Yes. Assemble the casserole up to 24 hours ahead, cover, and refrigerate. Add 10–15 minutes to baking time when cooking cold.
What can I substitute for French onion soup?
Use cream of mushroom soup or caramelized onion soup as a 1:1 swap. Beef consommé mixed with sautéed onions also works well.
Do I need to use long-grain white rice?
Long-grain white rice is best for texture, but medium-grain works. Avoid instant or brown rice, as they absorb liquid differently and alter cooking time.
How do I know when the rice is done?
The rice is done when all liquid is absorbed and grains are tender, about 45–50 minutes at 350°F. The top should look set but not browned.
Can I double this recipe?
Yes. Use 3 cups rice, 2 sticks butter, 3 cans beef broth, and 2 cans French onion soup. Bake in a 9x13 dish for 50–55 minutes.