Preheat oven to 300 degrees. Beat the butter until creamy. Stir in the sugar until well blended. Sift in the flour and cornstarch. Add the vanilla extract. Stir until the mixture just begins to come ...

High altitudes make cookies spread in the pan, cakes fall, and few baked goods turn out as they do at sea level. This twice-monthly column presents recipes and tips that make baking in the mountains ...