In the bowl of a stand mixer, fitted with the paddle attachment, beat the butter and sugar together until light and fluffy. Add the eggs and vanilla, and continue mixing until smooth, scraping down the sides of the bowl as necessary. Add the flour, graham cracker crumbs, baking powder, salt, and cinnamon, and mix on medium-low speed until just combined. If dough still looks crumbly, use your hands to squish/knead the dough together.