01 -
Preheat the oven to 175°C and line a baking sheet with parchment paper or a silicone baking mat.
02 -
In a mixing bowl, melt the butter then add granulated sugar, egg yolks, and vanilla extract. Stir until well combined.
03 -
Gradually add green gel food coloring to the wet mixture, stirring until the desired color intensity is reached.
04 -
Sift together the all-purpose flour, baking soda, and salt, then gently fold into the wet ingredients until fully combined to form a dough.
05 -
Divide the dough into 12 equal portions, shaping each into a small ball using a small scoop or spoon.
06 -
Roll each dough ball in granulated sugar until evenly coated to create a slightly crisp exterior once baked.
07 -
Place dough balls on the prepared baking sheet, spaced evenly, and bake for 10 to 11 minutes until puffed and starting to crack.
08 -
Immediately after baking, press one red heart sprinkle into the center of each cookie. Let rest on the baking sheet for 2 minutes before transferring to a wire rack to cool completely.