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 straight from the pan. Use a spatula to lift generous scoops of potatoes, cheese, and bacon onto plates.
Spatula lifting a serving of Irish nachos from the pan
Variations & Tips
For extra crispness, toss the potato slices lightly with 1–2 tablespoons of neutral oil and a pinch of salt and black pepper before baking (this technically adds an ingredient, but it doesn’t change the core 4-ingredient concept).
You can also switch up the cheese: an Irish cheddar adds a nice nod to the name, while a mix of cheddar and Monterey Jack melts beautifully. If you prefer a bit of heat, sprinkle on a pinch of red pepper flakes or use a sharp, spicy cheddar.
Irish nachos variation with extra toppings and dipping sauce
For a heartier version, layer on finely chopped cooked corned beef instead of, or in addition to, the bacon for a pub-style twist. To keep things slightly lighter, serve with a side of tangy plain Greek yogurt instead of sour cream for dipping. Finally, if you’re feeding a crowd, bake on two pans at once, rotating them halfway through so the potatoes brown evenly.
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