Patti's Potato soup

5-6 large potatoes, peeled and cut up

1 onion,sliced

salt

pepper

6 T. butter

6 T. flour

6 c. milk

Salt,pepper and cook potatoes and onion in water until potatoes are tender. While potatoes are cooking, make the white sauce. Melt butter and stir in flour.Add a little more salt and pepper. Gradually add milk and stir until thickened. When potatoes are done, drain water.(I leave a little bit of water) Add the white sauce. Serve with cheese and crackers or cornbread