Cheesy Ground Beef and Rice Casserole—ultra-creamy, pantry-friendly comfort with tender rice, savory beef, and a molten cheddar top.

Some nights call for a casserole that feels like a hug. This one delivers: seasoned ground beef, onions, and mushrooms mingle with long-grain rice, then get folded with a trio of creamy helpers—cream of mushroom soup, milk, and sour cream. A snowfall of cheddar seals the deal, baking into a bubbly, golden lid you’ll want to crack with your spoon.
Everything happens simply: build flavor on the stovetop, let the rice steam until fluffy, stir in the creamy elements, and finish in the oven. It’s the kind of back-pocket dinner that uses what you already have and feeds everyone happily.
Step-by-Step Cheesy Ground Beef & Rice
- Brown & season. Cook ground beef with Italian seasoning, salt, and pepper; drain and set aside to keep the casserole from tasting greasy.
- Soften aromatics. In the same pot, melt butter and sauté diced onions until tender; stir in garlic to bloom.
- Steam the rice. Add beef broth, a little more butter, and long-grain rice. Bring to a boil, then cover and simmer. Add sliced mushrooms partway so they soften without going soggy.
- Rest the pot. Turn off the heat and let it sit covered—this releases any rice clinging to the bottom and finishes the texture.
- Make it creamy. Fold in the cooked beef, cream of mushroom soup, milk, sour cream, and half the cheddar until combined and velvety.
- Bake & melt. Transfer to a greased 9×13, top with remaining cheddar, cover, and bake until hot and bubbly. Rest a few minutes before serving.
Cheesy Ground Beef & Rice Ingredients
- Ground beef — Savory base that keeps the casserole hearty.
- Long-grain white rice — Stays fluffy and distinct after baking.
- Beef broth — Seasons the rice from within for deeper flavor.
- Onion & garlic — Aromatic backbone that sweetens as it cooks.
- Button mushrooms — Meaty bites that add umami and moisture.
- Cream of mushroom soup — Quick, reliable creaminess and body.
- Milk — Loosens the mixture to a scoopable, saucy texture.
- Sour cream — Tangy richness that keeps leftovers luscious.
- Sharp cheddar — Melty, golden lid plus cheesy pockets inside.
- Italian seasoning, salt & pepper — Balanced, built-in savory lift.
- Butter — Helps sauté, adds flavor, and coats the rice.
Can I use brown rice instead of white?
Yes, but cook it separately first; it needs more liquid and time. Use about 3¾ cups cooked brown rice, then proceed with the creamy mix and bake as directed.

How do I skip canned soup?
Stir together 1 cup whole milk, 1 cup broth, and 2 tablespoons flour. Simmer with sautéed mushrooms until thick, then season. Fold in like cream of mushroom soup.
Will this work with precooked rice?
Absolutely. Combine 3¾ cups cooked rice with the beef, aromatics, and creamy ingredients. Add a splash of broth if it seems dry, then top with cheese and bake.
Can I freeze the casserole?
Yes. Assemble and bake, cool completely, then wrap tightly and freeze up to 2 months. Thaw overnight and reheat covered at 325°F with a splash of milk to re-loosen.
What veggies can I add?
Peas, small broccoli florets, or diced carrots are great. Stir in thawed frozen veggies with the creamy ingredients so they warm through without overcooking.
Pro Tips for Cheesy Beef & Rice
- Don’t stir the rice as it cooks. Lifting the lid early releases steam and can make it gummy.
- Taste before salting. Cheddar and soup add sodium—season after combining.
- Grate your cheese. Fresh-shredded cheddar melts smoother than pre-shredded.

Serving Ideas for This Casserole
- Simple green salad with a zippy vinaigrette to cut the richness.
- Roasted green beans or broccoli for crisp, caramelized contrast.
- Garlic bread to scoop up the cheesy edges.
Storage & Reheating
Refrigerate leftovers up to 4 days in an airtight container. Reheat covered at 325°F or gently on the stovetop with a splash of milk or broth until creamy and hot. For make-ahead, assemble, cover, and chill up to 2 days; bake 25–30 minutes, then rest 5 minutes so slices hold together.

Cheesy Ground Beef and Rice Casserole
Ingredients
- 1 ¼ cups uncooked white long-grain rice ensure it is not quick-cooking
- ½ cup whole milk or any preferred variety
- 2 ½ cups beef stock
- 2 cups shredded sharp cheddar split into two portions
- 10.5 ounces condensed cream of mushroom soup
- ¾ cup finely chopped yellow onion
- 1 tablespoon minced fresh garlic
- 8 ounces button mushrooms cleaned and sliced
- 1 pound lean ground beef 85% lean recommended
- 1 ½ teaspoons dried Italian herb blend
- ½ cup full-fat sour cream
- 3 tablespoons unsalted butter separated
- Kosher salt and freshly ground black pepper to taste
Instructions
- Begin by setting your oven to preheat at 350°F (175°C).
- In a deep, heavy-bottomed pot, brown the ground beef over medium-high heat until fully cooked. While cooking, season the meat with Italian seasoning, a dash of salt, and freshly ground pepper.
- Once browned, drain off any rendered fat. Remove the beef from the pot and set it aside, covered with foil to retain heat.
- Using the same pot, melt 2 tablespoons of the butter. Add the diced onions and sauté for approximately 5 minutes until translucent and fragrant. Stir in the minced garlic and continue cooking for an additional minute.
- Pour in the beef broth, add the remaining tablespoon of butter, and stir in the uncooked rice to incorporate evenly.
- Bring the mixture to a rolling boil. Once boiling, reduce the heat to low, cover tightly with a fitted lid, and allow it to simmer for 10 minutes.
- Carefully add the sliced mushrooms into the pot without stirring the rice. Replace the lid and let the mixture simmer for another 5–10 minutes, depending on rice package directions.
- Turn off the heat and allow the pot to rest, covered, for 10 minutes. Avoid disturbing the rice; any grains sticking to the bottom will naturally loosen.
- Return the cooked beef to the pot. Add in the cream of mushroom soup, milk, sour cream, and half of the grated cheddar. Stir thoroughly to combine all components.
- Grease a 9×13-inch baking dish lightly with oil or butter. Spread the beef and rice mixture evenly into the dish and sprinkle the remaining cheddar cheese on top.
- Cover the dish with foil and place in the preheated oven. Bake for 20 minutes or until the cheese is thoroughly melted and the casserole is heated through.
