Chocolate-Mint Thumbprints Chocolate-Mint Thumbprints Ingredients 1 cup butter, softened 1 cup powdered sugar 1 1/2 teaspoons peppermint extract 2 egg yolks 16 drops green food color 2 1/4 cups Gold Medal® all-purpose flour 1/2 teaspoon baking powder 1/4 teaspoon salt 3/4 cup dark chocolate chips 3 tablespoons whipping cream 3 tablespoons butter 18 thin rectangular