Butter Shortbread Cookies
INGREDIENTS: Makes 24–30 cookies 1 cup unsalted butter , softened (2 sticks) 1/2 cup powdered sugar , sifted 2 cups all-purpose flour 1/4 tsp salt 1 tsp vanilla extract (optional, for extra flavor) Optional Add-Ins: Zest of lemon or orange for a citrus twist 1/2 …