Start by preheating your oven at 160c and prepare a 9x9inch pan with parchment paper. 35-40 min.
In a medium bowl, add all the dry ingredients - flour, baking powder, salt and mix. Set aside.
In a large bowl, add the melted butter with the brown sugar and mix until it's well combined.
Add the eggs, vanilla extract and whisk.
Slowly add the dry ingredients into the wet ones and fold until everything's incorporated.
Lastly, fold in the biscoff and white chocolate chunks, but do not overmix!
Pour the batter into your prepared pan and bake for 35-40 minutes or until the edges are lightly crispy and the center is slightly soft.
Leave the biscoff blondie to cool down at least 1-2 hours before cutting and enjoying!