In a large bowl, cream together the softened butter and granulated sugar until light and fluffy.
Beat in the eggs one at a time, then stir in the vanilla extract.
In a separate bowl, whisk together the flour, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
Add the green food coloring and mix until the dough is evenly colored.
Cover the dough and refrigerate for at least 30 minutes.
Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
Roll out the dough on a lightly floured surface to about 1/4-inch thickness.
Use a heart-shaped cookie cutter to cut out cookies. Place them on the prepared baking sheets.
Bake for 10-12 minutes, or until the edges are lightly golden.
Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.
Melt the red candy melts according to package directions.
Once the cookies are completely cooled, use a small spoon or piping bag to drizzle or dot red candy melts onto the center of each cookie to resemble a Grinch heart.
Allow the candy melts to set before serving.
Notes
These cookies are best enjoyed with a glass of milk or a warm cup of cocoa.