Hot tip: sugar cookies, chocolate chip cookies, and shortbread cookies all benefit from mixing cornstarch into the recipe.

If you love buttery shortbread, you'll be a fan of lavender shortbread cookies too. Their balanced floral flavor is noticeable without being overpowering.

High altitudes make cookies spread in the pan ... Make the dough: Place the flour, cornstarch, sugar, and salt in a food processor and pulse to combine. Add the butter and vanilla, and pulse ...