A buttery, melt-in-your-mouth shortbread cookie with a bit of preserves in the center. Perfect for the holidays.
Preheat oven to 300°
Mix butter until light and fluffy.
Gradually add dry ingredients until well blended. You can use a mixer with a dough hook or a handheld dough cutter.
Dust hands lightly with cornstarch or powdered sugar, roll dough into 1 inch balls, and place on a parchment paper lined baking sheet.
Press each cookie lightly in the center to make an indentation. Fill each with a dollop of your choice of preserves.
Bake at 300° for 20-25 minutes. You want the cookies to be done, but not browned. Just a light, golden tinge on the bottom or edges is fine.