01 -
Preheat the oven to 400°F. Arrange bacon on a lined sheet pan and bake for 18-22 minutes until crisp, or cook it in a skillet. Drain well, crumble, and reserve a small handful for topping.
02 -
Reduce the oven to 325°F. Grease a 13x9-inch baking dish with nonstick spray or butter.
03 -
In a large bowl, stir together mayonnaise, sour cream, garlic powder, smoked paprika, salt, pepper, and most of the sliced green onions.
04 -
Add the cubed potatoes, 1 1/2 cups cheddar, and most of the crumbled bacon. Stir until the potatoes are evenly coated, then spread the mixture in the prepared baking dish.
05 -
Cover the dish tightly with foil and bake for 45 minutes. This helps the potato centers steam and soften.
06 -
Remove the foil. Sprinkle with the remaining 1/2 cup cheddar and reserved bacon. Bake 35-45 minutes more, until the potatoes are tender and the top is browned and bubbly.
07 -
Let the casserole rest for 10 minutes. Top with the remaining green onions and serve hot.