Chewy one-bowl biscoff blondies have cookie butter spread and biscoff cookie pieces in the blondie bars, which are baked on top of a layer of biscoff cookies. This easy recipe is perfect for biscoff and speculoos fans!
Now add the flour and mix into the wet ingredients with a spatula until some flour remains. Then add in the 8 chopped Biscoff cookies and mix until just combined.
Then spread the batter evenly over the cookies. Bake until edges are set and a toothpick inserted in the center comes out with just a few moist crumbs.