Step 1

Peel the potatoes, then using a mandolin, or sharp knife - do a medium slice on your potatoes. They should be between a quarter and a half inch thick).

Step 2

Slice the onions thinly.

Step 3

Grease an 8 x 8 baking dish, and preheat the oven to 350F.

Step 4

Layer the potatoes, onions, flour, salt and pepper, about 3 times. On the last layer - add the butter.

Step 5

Heat the milk til it's hot, but not boiling.

Step 6

Pour the milk over the top of the dish.

Step 7

Top with cheese.

Step 8

Bake until potatoes are tender (about 50 minutes).

Step 9

Uncover and bake until top browns

Step 10

Remove from the oven, and let it stand while the sauce thickens.

Step 11

Devour (and hide the leftovers for yourself).