01 -
Put the raspberries and sugar together in a pot over medium flame. Stir constantly while cooking about 10 minutes until everything turns soft and syrupy. Push through a fine mesh strainer and set aside to cool down.
02 -
Cut the frozen raspberries into tiny bits (don't blend them) and stick them back in the freezer. In a bowl, mix your flour, baking powder, cornstarch, and salt. In another small cup, stir the leftover cornstarch with water till smooth.
03 -
Mix the butter and sugar till they're fluffy and pale, around 2-3 minutes. Dump in the cornstarch water mix, milk, and your cooled berry syrup. Slowly add the dry stuff, then pop in the food coloring. Last, gently fold in the icy raspberry bits for a pretty pink marble look.
04 -
Stick the dough in the freezer for at least an hour. Heat your oven to 325°F. Scoop balls of dough, roll them in the extra sugar, and place them far apart on baking sheets with parchment. Bake for 15 minutes. Right away, use a spatula to fix the edges, then let them sit on the pan for 5 minutes before moving.