In a mixing bowl, cream the unsalted butter, granulated sugar, and sea salt for about 3 minutes until light and fluffy.

Pour in the beaten eggs and vanilla extract. Mix until well combined.

Gradually add the all-purpose flour and red gel food coloring. Stir until a smooth dough forms.

Wrap your dough in plastic wrap and chill it in the fridge for about 2 hours.

After chilling, roll out the dough on a floured surface to about ¼ inch thick.

Press a smaller heart-shaped cutter into the center of each shape, then fill with crushed hard candy.

Preheat your oven to 350°F and bake the cookies for 10-12 minutes, or until edges are golden brown.

Let your cookies cool on the baking sheet for a few minutes before transferring them to a wire rack.