Preheat oven to 300°F.

Beat butter with a mixer until light and fluffy.

Sift flour, cornstarch, powdered sugar, and salt together in a separate bowl.

Gradually add the dry ingredients to the whipped butter, mixing a little at a time.

Add vanilla and beat well until combined.

Drop dough by teaspoonful onto a parchment-lined cookie sheet.

Bake for 30-40 minutes, or until the edges are just turning light golden brown.

The cookies will be delicate, so handle with care.

Pack or freeze carefully to prevent breakage.

Optional: Add a candied cherry half to the center of each cookie before baking for a different look.