Step 1

Preheat oven to 350°F and spray a 9x13-inch baking dish with nonstick spray. Set aside.

Step 2

Add ground beef and onion to a large skillet over medium-high heat, season with salt and pepper, and cook until no longer pink. Drain fat and set aside.

Step 3

Arrange a single layer of potatoes in bottom of baking dish. Season with salt and pepper. Top with 1/4 of the beef mixture and 1/4 of the cheddar cheese. Repeat layers three more times.

Step 4

In a small bowl, whisk together cheddar soup, evaporated milk, milk, and garlic powder until smooth. Pour over ingredients in baking dish.

Step 5

Cover dish tightly with foil and bake 60 minutes. Uncover and bake until top is golden brown and bubbly, 15 minutes more. Enjoy!