Tofu Chocolate Dessert

10 oz tofu (extra firm)
3 tsp vanilla extract
2 Tbsp maple syrup (or other sweetener) or to taste
1/2 cup tahini (sesame butter)
3/4 cup cold water or soy milk
1/4 cup walnuts (chopped med. coarse)
3 Tbsp cocoa powder
prepared and cooled 9 inch pie crust of your choice
Cube tofu and process in food processor until very smooth. Add
vanilla and maple syrup while continuing to blend. Stop and add
tahini, then continue to blend (mixture will clump up but smooth out
with continued processing). Add liquid in two or more additions,
blending between. Mixture should be quite soft and probably has
become quite warm. Divide mixture in half; leave one half in
processor. Fold walnuts into the 1/2 mixture in bowl and cocoa powder
into the 1/2 mixture in the processor. Blend tofu and cocoa mixture
till smooth. Spread the two mixtures into a prepared and cooled pie
crust of your choice. Now, swirl the vanilla and chocolate layers
together for an attractive appearance. Chill thoroughly and serve
with whipped cream or rice dream (available at health food store)