Name: Cheesy Ground Beef Casserole Made With Frozen Potatoes
Prep time: 15 min
Cook time: 35 min
Total time: 50 min
Cuisine: American
Ingredients: 1 pound ground beef 1 tablespoon olive oil 1 medium yellow onion, diced 1 green bell pepper, chopped 1 red bell pepper, chopped 2 cloves garlic, minced 28 ounces frozen diced hash brown potatoes, thawed 1 teaspoon salt; 0.5 teaspoon black pepper 1 teaspoon paprika 1 teaspoon dried oregano; 0.5 teaspoon onion powder; 0.5 teaspoon garlic powder 2 cups shredded sharp cheddar cheese, divided; 10.5 ounces condensed cream of mushroom soup; 0.5 cup sour cream; 0.25 cup milk

A hearty and comforting dinner that checks every box? That’s exactly what you get with this Cheesy Ground Beef Casserole made with frozen potatoes. It’s the kind of cozy, all-in-one meal that turns a handful of pantry staples into a satisfying, cheesy masterpiece your whole family will request again and again.

This casserole brings together seasoned ground beef, tender frozen potatoes, sweet onions, and vibrant bell peppers all tied together with melted cheddar cheese. It’s easy to prep, uses ingredients you probably already have, and bakes into a bubbling golden dish of savory goodness. Weeknight dinner, solved.

What Kind of Frozen Potatoes Should I Use?

For this casserole, diced hash brown potatoes or southern-style frozen potatoes work best. They’re small enough to cook evenly and absorb the rich beef and cheese flavors without turning mushy. Avoid shredded varieties unless you’re going for a softer, hash brown texture.

Ingredients for the Cheesy Ground Beef Casserole Made With Frozen Potatoes

1 pound ground beef
1 tablespoon olive oil
1 medium yellow onion, diced
1 green bell pepper, chopped
1 red bell pepper, chopped
2 cloves garlic, minced
1 (28-ounce) bag frozen diced hash brown potatoes (thawed)
1 teaspoon salt
1/2 teaspoon black pepper
1 teaspoon paprika
1 teaspoon dried oregano
1/2 teaspoon onion powder
1/2 teaspoon garlic powder
2 cups shredded sharp cheddar cheese (divided)
1 (10.5-ounce) can condensed cream of mushroom soup
1/2 cup sour cream
1/4 cup milk

How To Make the Cheesy Ground Beef Casserole Made With Frozen Potatoes

Step 1: Brown the Beef and Veggies

In a large skillet, heat olive oil over medium heat. Add ground beef and cook until browned, breaking it apart with a spoon as it cooks. Drain excess grease if needed. Stir in diced onion, green and red bell peppers, and garlic. Sauté until vegetables are tender, about 5 minutes.

Step 2: Mix in Flavor

Season the beef mixture with salt, pepper, paprika, oregano, onion powder, and garlic powder. Stir well to evenly coat the meat and veggies.

Step 3: Add Creamy Ingredients

Lower the heat and stir in the cream of mushroom soup, sour cream, and milk. Mix until smooth and creamy. Let it warm through for 2-3 minutes.

Step 4: Combine with Potatoes and Cheese

In a large mixing bowl, combine the thawed frozen potatoes, beef mixture, and 1½ cups of shredded cheddar cheese. Mix until everything is evenly distributed.

Step 5: Bake

Preheat oven to 375°F (190°C). Transfer the casserole mixture to a greased 9×13-inch baking dish. Spread it out evenly and top with the remaining 1/2 cup of cheddar cheese.

Step 6: Serve

Bake uncovered for 30–35 minutes, or until hot, bubbly, and golden on top. Let it cool slightly before serving.

How to Serve and Store This Cheesy Ground Beef Casserole

This casserole is a meal all on its own, but it pairs beautifully with a simple side salad, steamed broccoli, or a warm slice of garlic bread. It also makes a great potluck or make-ahead dish.

To store leftovers, let the casserole cool completely, then cover and refrigerate for up to 4 days. Reheat individual portions in the microwave or rewarm in the oven at 350°F until heated through.

You can also freeze it! Wrap tightly with foil and freeze for up to 3 months. To reheat, thaw overnight in the fridge and bake at 375°F until hot.

Frequently Asked Questions

Can I use fresh potatoes instead of frozen?

Yes, just dice them small and parboil for 5–10 minutes before adding to the mix. This helps them cook through in the oven.

Can I substitute the ground beef?

Definitely. Ground turkey, chicken, or even a plant-based meat substitute all work well in this recipe.

What can I use instead of cream of mushroom soup?

Cream of chicken or cream of celery are good alternatives. You can also make a quick homemade white sauce if you prefer a from-scratch base.

Can I make this ahead of time?

Yes! You can assemble the casserole a day in advance, cover tightly, and refrigerate until ready to bake.

Will other cheeses work?

Absolutely. Monterey Jack, pepper jack, or a Colby blend would be delicious and add a unique twist.

How do I make this spicier?

Add some diced jalapeños, a dash of cayenne, or swap in pepper jack cheese for a mild kick.

Want More Dinner Ideas with Ground Beef?

If this Cheesy Ground Beef Casserole is your kind of meal, you’ll probably love these other comforting weeknight classics:

📌 Save this recipe to your Pinterest dinner board so you can come back to it any time.

And let me know in the comments how yours turned out! Did you use a different cheese or try spicy peppers? Maybe even add bacon bits?

I love seeing your spins on these recipes. Got questions? Don’t be shy—let’s help each other make dinnertime more delicious.

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