In a large mixing bowl, beat the butter and sugar together until light and fluffy, about 2-3 minutes.

Add in the egg, almond extract, and vanilla extract, mixing until smooth.

Sift in the flour, cornstarch, baking powder, and salt, combining on low speed until a soft dough forms.

Divide the dough into three portions, color one red, one green, and keep one plain. Chill for 30 minutes.

Roll each portion into rectangles and stack them with green on the bottom, white in the middle, and red on top, then roll into a tight log.

Roll the log into sprinkles to coat, pressing gently to ensure they stick.

Slice the log into rounds and place them on baking sheets, spacing apart.

Preheat oven to 350°F and bake for 12-14 minutes until edges are set.

Cool on the baking sheet for 15 minutes before transferring to a wire rack.