White cheese sauces are very popular in Springfield in the last few years. Here is an easy to make variation using shredded white cheddar.
2 T butter
2 T all-purpose flour
1/4 t salt
1/8 t white pepper
1 c milk
1 C white cheddar cheese, shredded
In a medium saucepan, melt butter and stir in flour to make a roux. Stir in milk, salt, and pepper. Cook over medium heat, stirring constantly until sauce thickens. Add cheese and cook just until melted, stirring occasionally.