Do you know speculoos, the Belgian cookie that tastes like a caramelized gingerbread cookie? If you haven't yet discovered this tasty treat, stopping by Trader Joe's is a good start. They carry a miraculous spread made from speculoos cookies that's far too easy to eat straight from the jar. But we've never thought of using it to make cookie bars as Butter Me Up Brooklyn has done — read on for more!Think of these as peanut butter bars, updated. Mix creamy cookie spread with ingredients for traditional blondie bars, top with a cookie frosting and a sprinkle of cinnamon and sugar — we can't wait to try these!