In a small bowl, combine the ground flax, water and vanilla. Stir and set aside.
2 Tbsp Ground Flax, 5 Tbsp Water, 2 tsp Vanilla Extract
In a large bowl using a hand mixer or a rubber spatula, cream together the vegan butter, brown sugar and Biscoff cookie butter until fluffy.
6 Tbsp Non-Dairy Butter, ¾ Cup Dark Brown Sugar, ⅓ Cup Biscoff Cookie Butter
Add the flax egg into the bowl and stir to combine.
Add the flour, baking powder, baking soda, salt and cinnamon and stir just until the dough forms.
2 Cups All Purpose Flour, 1 tsp Baking Powder, ¾ tsp Baking Soda, ¾ tsp Kosher Salt, ¾ tsp Ground Cinnamon