1/2 onion, chopped 4 tbsp butter 4 tbsp flour 1/2 tsp salt 1/4 tsp pepper 2 cups milk 1/2 cup half and half 6 cups potatoes, peeled and sliced thinly 2 cups shredded cheddar cheese
a large pot. Saute chopped onions in butter till soft but not browned.
In a small bowl, combine flour, salt and pepper. Stir flour mixture
into onion mixture, add milk and half and half. Stir and cook over
medium heat till mixture begins to thicken (about 3 minutes).
Turn off heat.
1 1/2 cups cheese to the sauce and stir till melted and smooth. Add
sliced potatoes and stir well to combine. Pour mixture into a 9x13
casserole dish sprayed with no stick spray. Cover with foil and bake at
350 for 35 minutes.
foil, sprinkle reserved cheese over top and return to oven to bake
another 30 minutes until potatoes are soft, cheese is melted and edges
begin to brown. Let stand a few minutes before serving to allow sauce