Au Gratin Potatoes

Step 1

Preheat oven to 400 degrees F.

Step 2

Wash potatoes and slice into 1/8' thin slices. Slice onion as thin as possible.

Step 3

Layer potatoes and onions in little stacks. Place stacks upright in a greased casserole dish.

Step 4

Melt butter & flour in a sauce pan and cook 2-3 minutes. Add seasonings and milk. Whisk over medium heat until thick and bubbly. Remove from heat and stir in cheeses until melted.

Step 5

Spoon cheese sauce over potatoes. Cover with foil (sprayed with cooking spray) and bake 60 minutes. Remove foil and bake an additional 20-30 minutes or until lightly browned and potatoes are cooked.