My Irish neighbor brought these to the potluck and the pan was licked clean in minutes. It is so easy with just 4 ingredients.

Sprinkle the shredded cheddar evenly over the hot potatoes, covering as many slices as possible. Scatter the crumbled bacon over the cheese.

Return the pan to the oven and bake for another 5–8 minutes, just until the cheese is fully melted and bubbling and the bacon is sizzling.

Melted cheddar bubbling over roasted potato slices

Remove from the oven and immediately sprinkle the sliced green onions over the top for freshness and color.

Let the Irish nachos cool for a few minutes so the cheese can set slightly, then serve