Preheat oven to 400°
Wash and slice the potatoes into 1/4" slices (most times I microwave the potatoes to cut down on the cooking time, for every 2 potatoes I microwave them 1 minute then I slice them).
Toss the potatoes in oil, line a baking sheet with the potatoes, or create layers in an oven-safe skillet.
Place into the oven and cook until the potatoes are tender about 30 minutes, turning them with a spatula for the last 10 minutes so both sides are crispy.
Remove from oven, pile on the cheese so it's layered in between the potatoes and it'll melt easily.
Top with cooked bacon, green onions, and sour cream.
Top it with any sauce you prefer, sriracha, hot sauce, or similar.