My Vegan Banana Brownie Recipe

As some of you know, now that the kitchen is nearly done, I have started experimenting with cooking and recipes to try and improve my overall diet. Here is an example of a Brownie recipe I've put together that I believe is pretty good. Made without butter, white sugar, eggs, or dairy products these still taste great.

Ingredients:
1 cup Vanilla Soy Milk
1 Banana
1/2 cup Light brown sugar
1/2 cup Dark light brown sugar
1/3 cup Unsweetened Cocoa powder
1/2 cup Whole Wheat flour
1/4 teaspoon salt
1/4 teaspoon baking powder
4 oz chopped Walnuts

Directions:
Preheat oven to 350 degrees F (175 degrees C).
Lightly grease with vegetable oil an 8 inch square pan.
Blend Soy Milk and Banana
In a large mixing bowl combine 1/3 cup cocoa, Sugars, 1/2 cup flour, salt, and baking powder.
Mix in Soy/banana mix
Spread batter into prepared pan.
Gently place Walnuts over the top until well covered.
Bake in preheated oven for 25 to 30 minutes.
(Cook until a toothpick inserted comes out clean.)
Allow to cool for 15 minutes
Remove from pan and enjoy