Season the mixture with garlic powder, salt, and pepper. Stir in 1 cup of shredded cheddar cheese.
Transfer the mixture to a greased 9×13 inch baking dish. Top with the remaining 1/2 cup of shredded cheddar cheese.
Bake in the preheated oven for 25-30 minutes, or until the cheese is melted and bubbly.
Let the casserole rest for 5 minutes before serving. Enjoy!
Variations & Tips
For a bit of a twist, you can substitute the ground beef with ground turkey or chicken. If you have picky eaters, consider blending the onions and peppers to make them less noticeable. You can also add a variety of veggies like peas, carrots, or corn to sneak in some extra nutrition. For a creamier version, use sour cream or cream cheese in place of the milk. And if you’re a fan of a crunchy topping, sprinkle some crushed crackers or breadcrumbs on top before baking.
