Step 1

Preheat the oven to 400 degrees F.

Step 2

Lightly grease a 1-quart baking dish.

Step 3

In a medium bowl, add the garlic, the salt, the pepper, the red pepper flakes, and the heavy cream and whisk to combine.

Step 4

In a large bowl, add the mild cheddar, the extra sharp cheddar, the Gruyère, and the parmesan and stir to combine.

Step 5

Add two layers of the potato slices to the prepared baking dish and top with 1/2 of the cheese mixture.

Step 6

Repeat the layers until all the potatoes and all the cheese mixture have been used.

Step 7

Pour the heavy cream mixture over the potato mixture.

Step 8

Bake the cheesy potatoes until the potatoes are fork tender and the top is golden, about 50 minutes-1 hour.

Step 9

Serve.