Cheesy Scalloped Potatoes

5 red potatoes
1 chopped onion, onion powder
flour, salt & pepper, butter, milk, shredded cheddar cheese

With a 1/2 stick of butter, melt in pan on low. Add about 1/4 cup flour (more or less) to make a roux. When the ball forms, add milk, salt and pepper and cook until slightly thickened. Add shredded cheese.

Slice potatoes and alternate in a dish with onion, salt & pepper, and onion powder and bits of butter. Pour milk mixture over potatoes and bake covered for 30 minutes on 350. Take foil off and bake until brown and bubbly.