Hot Artichoke and Crab Dip

A perfect holiday party appetizer Ingredients 1 (9-ounce) package frozen artichoke hearts 1 red bell pepper, finely chopped 3 tablespoons unsalted butter 2 tablespoons all-purpose flour 1 1/4 cups half-and-half 3 scallions, thinly sliced 2 ounces finely grated...