Cream together sugar and butter in the large bowl of a stand mixer.

Add the egg, corn syrup, and vanilla and combine until fully mixed.

In another large mixing bowl combine the baking soda and flour, and whisk to remove any lumps. Gradually the dry ingredients add to the wet ingredients in the mixer until fully combined and a soft dough forms.

Wrap the dough in plastic wrap and chill dough in refrigerator.

To make the cookies, roll out the dough on a floured surface with a rolling pin, to about ⅛ inch thick, and cut a solid circle bottom piece and top piece with a hole in the middle.

Bake on a cookie sheet at 350 degrees, until golden brown, about 5 min. depending on the size of your cookie cutter.

Let cool completely on a wire rack, then sprinkle the top piece with powdered sugar, and spread the bottom with about 1 teaspoon of jam and sandwich together.

Makes about 2 ½ dozen sandwich cookies. Store in an airtight container. (Recipe can be easily doubled.)