Potato gratin (big)

• 2.5 lb potatoes, thinly sliced
• 3 T butter
• 3 T flour
• 2 cups milk
• 1/2 cup cheese
• 1/2 cup cheese
• breadcrumbs
• Optional: cubed ham

Layer sliced potatoes with salt, pepper and optionally ham in large baking dish. Pour cheese sauce over layers. Top with extra grated cheese and breadcrumbs.

Bake at 370 F for one hour, until potatoes are cooked and top is golden brown.

Source: Hadley and Jeff original