French Onion Ground Beef and Rice Casserole Tips, FAQ & printable recipe

Tips for success

For an extra layer of authentic French onion flavor, consider adding a splash of dry white wine or sherry to the skillet right after the onions finish caramelizing.

Use the wine to deglaze the pan, scraping up all the delicious browned bits stuck to the bottom before you add the ground beef and sauce. This simple addition introduces a subtle acidity that cuts through the richness of the cheese and beef, elevating the overall flavor profile of the dish.

If you want to enhance the texture of your casserole, you can sprinkle a handful of crispy fried onions or crushed garlic croutons over the cheese layer just before broiling.

This adds a delightful crunch that contrasts beautifully with the soft, tender rice and melted cheese, mimicking the toasted bread traditionally served on top of French onion soup. Be sure to watch the broiler closely to prevent the topping from burning.

Variations

• French Onion Chicken and Rice: Swap the ground beef for shredded cooked chicken breast for a lighter twist on this comforting casserole.
• Mushroom French Onion Casserole: Add sliced cremini mushrooms to the skillet with the onions to enhance the earthy, savory flavor profile.

Storage and make-ahead

Fridge

Store leftovers in an airtight container in the refrigerator for up to 3 to 4 days.

Freezer

Freeze in airtight, freezer-safe containers for up to 2 to 3 months. Thaw in the fridge overnight before reheating.

Reheat

Reheat individual portions in the microwave, or cover the baking dish with foil and bake at 350°F (175°C) until hot.

Allow any leftovers to cool completely at room temperature for no more than two hours before storing them. Transfer the cooled casserole to an airtight container, or cover the baking dish tightly with aluminum foil or plastic wrap.

Store it in the refrigerator to keep it fresh and delicious. For longer storage, you can freeze individual portions in freezer-safe containers for convenient, quick-reheating meals on busy nights.

This casserole is an excellent candidate for meal prep. You can assemble the entire dish up to the point of baking, cover it tightly, and keep it in the refrigerator for up to 24 hours. When you are ready to serve, simply bake it in a preheated oven at 375°F (190°C) for about 20 minutes until heated through, then pop it under the broiler to brown the cheese.

Serving ideas

Serve this rich and savory casserole hot, straight out of the baking dish, to enjoy the ultimate stretchy cheese pull. Because the dish is quite hearty and filling, it pairs beautifully with a light, crisp green salad tossed in a simple vinaigrette.

The bright acidity of the dressing balances the rich, cheesy flavors of the casserole, creating a well-rounded and satisfying dining experience.

For a complete bistro-style meal, serve the casserole alongside some roasted green vegetables, such as asparagus or green beans, or with a basket of warm, crusty French bread. The bread is perfect for wiping up any extra savory sauce left on the plate. Garnish with additional fresh parsley or a sprinkle of fresh thyme leaves right before serving to add a pop of color and herbal aroma.

Frequently asked questions

Recipe card

French Onion Ground Beef and Rice Casserole

Prep 15 minCook 35 minRest 5 minTotal 55 minServes 6

Ingredients

• 2 large yellow onions, thinly sliced
• 1 lb ground beef
• 1 1/2 cups French onion sauce (store-bought or made ahead)
• 3 cups cooked white rice
• 1 1/2 cups shredded cheese
• 2 tbsp chopped fresh parsley

Instructions

1. Add the sliced yellow onions to a large skillet over medium heat. Cook, stirring occasionally, for 15 to 20 minutes until they are deeply caramelized, soft, and a rich golden-brown color.
2. Add the ground beef to the skillet with the caramelized onions. Cook, breaking up the meat with a wooden spoon, until the beef is fully browned and has reached a safe internal temperature of 160°F (71°C), about 6 to 8 minutes. Drain any excess grease from the pan.
3. Pour the French onion sauce into the skillet with the browned beef and caramelized onions. Stir well to combine and let the mixture simmer gently over medium-low heat for 3 to 5 minutes until hot and bubbly.
4. Add the cooked white rice to the skillet, folding it gently into the beef, onion, and French onion sauce mixture until the rice is thoroughly coated and heated through.
5. Transfer the beef and rice mixture into a glass baking dish, spreading it into an even layer. Sprinkle the shredded cheese evenly over the top. Place under the broiler for 3 to 5 minutes until the cheese is melted, bubbling, and golden brown.
6. Remove the casserole from the oven and sprinkle the chopped fresh parsley over the hot melted cheese. Let it cool for a few minutes before slicing and serving hot.

Contains: milk

Estimated nutrition per serving

Calories

400

Protein

23.3 g

Carbohydrates

26.2 g

Fat

22 g

Fiber

1 g

Sugar

2 g

Sodium

600 mg

Automatic estimate from the ingredient list, not laboratory-verified.