Preheat oven to 350.
Line an 8x8 baking dish with parchment paper (grease the inside so the paper sticks).
Using a stand mixer, add melted butter, vanilla, coconut sugar, tahini, coconut oil, and the egg. Mix for about one minute, until creamed together well.
In a medium bowl, whisk together the dry ingredients, except for the walnuts.
Fold the dry ingredients into mixer bowl with the wet ingredients.
Add the walnuts and mix well. The dough will be very thick.
Transfer to the baking dish and use a spatula to make it flat and even.
Sprinkle extra walnuts on top as well as some coconut sugar.
Bake for 24-25 minutes.
Remove from oven and let cool completely before cutting into 16 squares.
Store in the refrigerator for up to one week.Enjoy!XO