Preheat oven to 350°F and line baking sheets with parchment paper.
In a medium bowl, whisk together gluten-free flour, baking soda, ginger, cinnamon, cloves, and salt.
In a large bowl, cream together butter and brown sugar until light and fluffy, about 3 minutes. Beat in molasses and egg until well combined.
Gradually mix the dry ingredients into the wet ingredients until a dough forms. Cover and refrigerate for 30 minutes.
Roll dough into 1-inch balls, then roll each ball in granulated sugar to coat.
Place cookies 2 inches apart on prepared baking sheets. Use your thumb to make an indentation in the center of each cookie.
Refrigerate shaped cookies for 15 minutes, then fill each thumbprint with about 1/2 teaspoon of jam.
Bake for 10-12 minutes until edges are set. Allow to cool on baking sheet for 5 minutes before transferring to a wire rack.