Exactly what the title suggests! Great with the first in season vegetable, asparagus!
In a medium saucepan, melt butter. Add flour; stir until smooth. Gradually add milk, stirring until smooth. Cook over low heat, stirring constantly, until thickened. Add salt and pepper. Add cheese if desired. If sauce is too thick, add more milk. Makes roughly 2 cups of sauce.Note: Use this sauce to cream vegetables such as spinach, apraragus, peas or onions. Cook vegetables until tender and add white sauce. Serve hot.