Cheesy Ground Beef Potato Casserole

Why you’ll love it

This cheesy ground beef and potato casserole is a practical weeknight dinner for busy days when you want something filling without a complicated cooking process. It may not be the fanciest-looking dish, but it delivers everything people love about comfort food: tender potatoes, savory beef, creamy sauce, vegetables, and a golden layer of melted cheese.

It is also a smart way to use a can of condensed cream of mushroom soup. Combined with milk, sour cream, Worcestershire sauce, Italian seasoning, and cheddar, it creates a creamy base that coats the potatoes and beef beautifully. Frozen mixed vegetables keep the prep simple while adding color and texture. The result is a kid-friendly casserole that works well for casual family dinners, potlucks, or any evening when you need a warm and reliable meal.

What you’ll need

• Potatoes – russet potatoes are used here because they bake up tender and hearty.
• Ground beef – lean ground beef keeps the casserole satisfying without making it too greasy.
• Onion and garlic – these add a savory base of flavor. Sweet onions such as Vidalia or Walla Walla work especially well.
• Frozen mixed vegetables – a convenient blend usually containing carrots, corn, peas, and green beans.
• Condensed soup – cream of mushroom soup is an easy shortcut for a creamy casserole sauce.
• Milk – adds moisture and helps loosen the sauce. 2% milk is recommended.
• Sour cream – makes the filling extra creamy with a gentle tang.
• Worcestershire sauce – adds savory depth to the beef mixture.
• Italian seasoning – a simple dried herb blend that rounds out the flavor.
• Cheddar cheese – melts into the casserole and creates an irresistible topping.

Pro tip

For the smoothest melt and best flavor, grate cheddar cheese from a block instead of using pre-shredded cheese. Packaged shredded cheese often contains anti-caking ingredients that can affect how it melts.

How to make this ground beef and potato casserole

This section gives a quick overview of the method. The complete ingredient amounts and instructions are listed in the recipe card below.

Start by preheating the oven and greasing a 9×13-inch casserole dish. Add the diced potatoes directly to the dish. In a skillet, cook the ground beef with the chopped onion, breaking the meat apart as it browns. Drain off any excess fat if needed, then stir in the garlic and frozen mixed vegetables. Cook for a few more minutes so the garlic becomes fragrant and the vegetables begin to warm through.

Season the beef and vegetable mixture with salt and pepper, then transfer it to the baking dish with the potatoes. In a separate bowl, stir together the condensed cream of mushroom soup, milk, sour cream, Worcestershire sauce, Italian seasoning, and half of the cheddar cheese. Pour this creamy mixture over the beef and potatoes, then stir everything together and spread it evenly in the dish.

Cover the casserole tightly with foil and bake until the potatoes begin to soften. Remove the foil, sprinkle the remaining cheddar over the top, and continue baking uncovered until the cheese is melted and the potatoes are fully tender. Let the casserole rest for a few minutes before serving so the sauce can settle slightly.

Substitutions and variations

• Use condensed cream of chicken soup instead of cream of mushroom soup if you prefer its flavor.
• Swap the cheddar for another good melting cheese. Pepper Jack adds a little heat, while mozzarella can be mixed with cheddar for a milder topping.
• For an extra cheesy casserole, use more cheddar on top during the final baking step.