Potato and Parmesan Gratin

I am a big fan of Gratins and I tend to make them often. They are inexpensive and easy to prepare. It's easy to alter the ingredients to suit what's on hand (onions, garlic, herbs, cheddar, feta--whatever)

• Ready In: 1 hr 30 mins
• Serves: 6-8

Ingredients

• 2 1⁄2 lbs baking potatoes, sliced 1/8 inch thick
• 1⁄4 cup  melted butter
• 10  ounces  freshly grated parmesan cheese, cheese
• 2  cups  whole milk

Directions

1. Preheat oven to 400^.
2. Butter a 13x9x2 inch glass baking dish.
3. In the dish, layer 1/3 of each ingredient in order given,except milk, repeating twice and ending with Parmesan.
4. Pour milk evenly over.
5. Bake 15 minutes, reduce temperature of oven to 350^F.
6. Continue baking until potatoes are tender and top is golden, about 1 hour longer.
7. Remove from oven and let stand 10 minutes before serving.