Combine all the ingredients except for the jam and mix well; knead into a dough. (The mixture will be a little dry, but will knead into a ball.) Wrap the dough in plastic and chill in the refrigerator for at least an hour. Form the chilled dough into small balls. Make a hole with your thumb in the center of each ball and fill with about a 1/2 teaspoon of jam. Close back up into a ball. (It’s okay if a little jam peeks out the top.) Bake at 375-degrees on a lightly greased cookie sheet for about 20 minutes or until just lightly browned at the edges.