I found this recipe in the cookbook Forks Over Knives.
Ingredients
3 ounces extra firm silken tofu drained
1/3 c pitted prunes, stems removed (I used raisins because I didn't have prunes)
1/2 cup plant based milk, heated ( I used rice drink)
3/4 c 100% maple syrup
1/2 cup plus 2 T unsweetened cocoa powder
3/4 c hot water, but not boiling
2 tsp pure vanilla extract
1 cup flour (your choice) I used soy flour
1/2 tsp baking soda
1/2 tsp salt
1/2 c walnuts roughly chopped (optional)
Directions
Preheat oven to 325 degrees. Use non-stick 8x8 baking pan.
Put tofu, prunes, hot plant-based milk in the blender, add maple syrup.
Mix cocoa powder and hot water in a separate bowl.
Mix tofu mixture and cocoa mixture together. Add vanilla.
Add flour, baking soda and salt.
Fold in walnuts,
Bake for 17-20 minutes. The top should set and be firm to the touch. Let cool for 20 minutes. Cut and serve. Makes 12 brownies.