Soak walnuts in 3 tablespoons apple juice concentrate. Sift baking powder
and cocoa into bowl with flour and make a well. Measure 1 1/3 cups apple
juice concentrate, oil, egg white and banana into measuring cup and add
all at once to dry ingredients and mix. Spread in 13 x 9 inch pan sprayed
with nonstick spray. Sprinkle with walnuts on batter evenly and smooth
nuts into batter with back of spoon.
Bake at 350 degrees for 30 minutes. Cover when slightly warm. Cut in
24 servings and store in freezer to keep fresh.