Lower-Calorie Brownies

Ingredients

• 3/4 c. sifted cake flour
• 1/4 tsp. baking powder
• pinch of salt
• 2/3 c. sugar
• 1/4 c. plus 2 Tbsp. cocoa
• 1 egg, beaten
• 1/4 c. egg substitute
• 1/4 c. plus 3 Tbsp. vegetable oil
• 1/4 c. skim milk
• 1 tsp. vanilla extract
• 1/3 c. chopped walnuts or pecans
• vegetable cooking spray