Dad's Creamy & Cheesy Au Gratin Potaotes

STEP 1

Place sliced potatoes in three tight slanted rows and add onion in between

STEP 2

Melt butter in a pan, then alternate flour & milk until you get a nice roux

STEP 3

Stir in cheddar cheese, garlic powder, salt & pepper

STEP 4

Pour cheese sauce over the potatoes, cover and bake

STEP 5

Remove from the oven, top with parmesan & gruyere and bake uncovered until golden

Sprinkle with fresh parsley and enjoy!