DO-AHEAD TIP: Peel and cook potatoes.
Preheat oven to 350 degrees.
In a large bowl, combine first 4 ingredients (potatoes through pimiento); transfer to a baking dish that
has been lightly coated with olive oil.
Melt the butter in a saucepan over medium-low heat; add the flour and blend until smooth and
bubbly. Gradually add the milk; cook, stirring constantly, until thickened.
Stir in cheese and paprika. Season with salt and pepper then pour sauce over potato/ham mixture;
bake for 35 to 45 minutes.