In the bowl of a stand mixer, use the paddle blade attachment to combine all of the ingredients except the jam until it becomes a cohesive dough, about 1-3 minutes.
Wet your hands just a little bit and roll the dough into balls. Using a ½ teaspoon measuring spoon (tip: re-use the one you used to measure the almond extract!), make a small well in the middle of each cookie.
Fill the wells with about ¾ teaspoon of jam.
Bake for 8-10 minutes, or until the edges are JUST slightly brown.
Let the cookies cool on the baking sheet for about 10 minutes before removing to a wire rack to cool completely.
Notes
Store the jam thumbprint cookies at room temperature for one day or in an airtight container in the refrigerator for up to 1 week.