Potatoes Au Gratin

Ashley, I've had this recipe for years but always forget to post. It's a simple way to make potatoes au gratin but so good!

What you will need:
4 russet potatoes, sliced 1/4 inch thick
1 onion, sliced into rings (mine always broke, but they still work!)
salt and pepper to taste
3 tablespoons butter
3 tablespoons flour
2 cups milk
1 1/2 cup shredded cheddar cheese

Directions:
1. Preheat oven to 400 degrees F
2. Butter a 1 quart casserole dish
3. Layer half the potatoes into the bottom of the casserole dish. Top with onion slices and then add the rest of the potatoes. Season with salt and pepper
4. In a saucepan, melt the butter over medium heat. Mix in flour and 1/2 tsp of salt. Stir constantly and add milk. Stir until it thickens
5. Stir in cheese until all melted
6. Pour mixture over potatoes
7. Cover with aluminum foil and bake for 1.5 hours

The recipe says to cover with foil. I usually cover it for 1/2 the time because I like browning the potatoes a little bit! Enjoy.