Star window cookies, made by crushing hard candies and placing in the middle of the stars when you bake. They will melt down and look like glass. A silpat would help with these but I think you could bake them on parchment paper.
5 delicious Valentine treats to make at home, like these yummy reese's heart peanut butter cookies!
Irresistible Chewy Trail Mix Cookies! (Vegan + Gluten-free) Loaded with healthy ingredients.