How to Bake Combine first four dry ingredients in a saucepan and whisk to combine Add milk, whisk until smooth and place over medium heat Stir constantly over the heat until the mixture becomes thick. Adjust heat so it doesn’t boil Pay close attention to the bottom and sides of the pan so it doesn’t stick and create lumps Once it’s as thick as you like it, remove from heat and stir in cold butter Serve over Mason Dixie biscuits!