Yolanda's Au Gratin Potatoes

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Ingredients

  • 2 lbs baking potatoes (my favorite are Idaho potatoes); remove skin if desired.
  • 2 tbs butter
  • 1 tbs flour
  • 1/2 medium Spanish onion (chopped)
  • 1 can evaporated milk
  • 1/2 cup grated Parmesan cheese
  • 1 pkg Cheddar cheese (8 oz)

Preparation

Step 1

1. Scrub and wash potatoes and slice thinly.

2. Melt butter in a sauce pan; add onions, and flour and stir. Add salt and pepper to taste and stir again. Stir in cold milk gradually and bring to a boil stirring constantly to avoid lumps, until the sauce thickens a little bit. Turn off heat. Add the sliced potatoes to the sauce and stir to make sure that the potatoes get covered with the sauce.

3. In a casserole, arrange layers of the potatoes with the grated and Cheddar cheese in between layers and on top.
Cover and bake for 25 minutes at 375° F.

4. Remove cover, raise temperature to 450° and continue baking until it turns golden brown. Remove from oven. Serve hot. Serves 6