No-Regrets Chocolate Snacking Cake

• nonstick cooking spray
• 1 34 cups flour
• 1 34 cups packed light brown sugar
• 34 cup cocoa powder
• 1 12 teaspoons baking soda
• 1 12 teaspoons baking powder
• 14 teaspoon salt
• 1 14 cups reduced-fat buttermilk
• 3 large egg whites
• 4 tablespoons light margarine, melted
• 1 12 teaspoons vanilla extract
• 1 cup boiling water
• 1 tablespoon confectioners' sugar

1. Preheat oven to 350F Lightly coat a 9-by-12-inch baking pan with cooking spray.
2. In a large bowl, combine next 6 ingredients (flour through salt).
3. Mix well with a fork to break up brown sugar.
4. Set aside.
5. In a large mixing bowl, combine buttermilk, egg whites, melted margarine and vanilla.
6. Mix on low speed until blended.
7. Gradually beat in boiling water.
8. Then slowly add flour mixture and, again, mix on low speed until blended.
9. Pour batter into prepared pan and bake 25 minutes, or until a toothpick inserted in center comes out clean.
10. Cool cake in pan on a wire rack.
11. Sift confectioners' sugar over top just before slicing.

nonstick cooking spray, flour, brown sugar, cocoa powder, baking soda, baking powder, salt, buttermilk, egg whites, light margarine, vanilla, boiling water, sugar

Taken from www.food.com/recipe/no-regrets-chocolate-snacking-cake-188493 (may not work)