01 -
Preheat the oven to 410 degrees Fahrenheit.
02 -
Line baking sheets with parchment paper.
03 -
Beat the cold butter, brown sugar, and granulated sugar together until smooth and creamy.
04 -
Add the eggs one at a time, mixing well after each addition.
05 -
Blend in the flour, cornstarch, and salt, mixing just until combined.
06 -
Gently fold mini chocolate chips into the dough, ensuring even distribution.
07 -
Scoop dough onto prepared baking sheets, shaping into 24 equal portions.
08 -
Bake in the preheated oven for 13 to 16 minutes or until edges are lightly golden.
09 -
Remove cookies from oven and press one unwrapped chocolate heart into the center of each while still warm.
10 -
Allow cookies to cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.