Spread the almond flour on a rimmed baking sheet and bake, stirring halfway through, until golden brown and toasted, 10 to 15 minutes. Immediately add it to a medium bowl to cool for 5 minutes. Line the baking sheet with a piece of parchment paper and set aside.
Add the coconut sugar, honey, limoncello, lemon zest, salt and egg to the toasted flour. Using a rubber spatula, stir until well combined and evenly moistened. Scoop heaping 1-tablespoon scoops of the dough onto the prepared baking sheet, leaving 1 inch between each. Flatten slightly with the palm of your hand, then make a small indent in the center of each cookie using your thumb. Fill each indent with 1/2 teaspoon cherry jam. Bake until golden brown and just set, 15 to 17 minutes. Allow to cool on the baking sheet for 5 minutes, then remove to a wire rack to cool completely. Store in an airtight container.