Four Cheese Potato Gratin

This Four Cheese Potato Gratin is one of the best potatoes au gratin recipes because it's made with four delicious cheeses. Fontina, Cheddar, Gruyere and Parmesan cheeses harmoniously come together to create a flavor explosion in every bite. This cheesy potato casserole is a simple casserole at its core, but the flavors are so far-reaching and complex that you'll fool everyone into thinking that this was hard to make. If you're searching for the best potato side dish, look no further. You've found it with this recipe!