Greetings, pmcclearyp1! Sounds like a good recipe and the layering sounds perfect. However, you'll probably want to combine the flour, butter, and milk to make a sauce first. To do so, whisk the flour into the melted butter and stir over medium-low heat until bubbly. Add the milk all at once, then stir over medium heat until the sauce is thickened. For some recommended amounts (for the sauce) click on this link: Scalloped New Potatoes.