Grinch Thumbprint Raspberry Cookies

1. Add flour, cornstarch, salt, and powdered sugar into the bowl of stand mixer fitted with the paddle attachment. Mix on low speed just until all combined.
2. Add cubed butter while the mixer is still going on low speed; mix until the ingredients resemble cornmeal.
3. Add the egg, lemon extract, and food coloring; mix until dough is cohesive and starts forming a ball.
4. Transfer the dough onto the kitchen plastic, form flat disc, wrap and refrigerate for 30 minutes.
5. Once dough has chilled, take it out of the fridge and let seat at room temperature for 5-10 minutes.
6. Pinch apprx. a tablespoon of the dough and roll into a smooth ball. Dip/roll in granulated sugar and place on your baking mat or parchment paper. Make the heart indentations using your thumb or spoon. Fill the "hearts" with homemade or store-bought raspberry jam.
7. Freeze your filled cookies for 10-15 minutes.
8. Preheat oven to 350° F.
9. Bake on middle rack for 15-18 minutes until cookie edges are set. Enjoy!💚❤️