Brownie Snack Cake

Ingredients:

• 3/4 cup sugar
• 1/4 cup vegetable oil
• 1/4 cup plain fat-free yogurt
• 1 teaspoon vanilla extract
• 3 large egg whites
• 1/2 cup all-purpose flour
• 1/3 cup unsweetened cocoa
• 1/4 teaspoon salt
• 1/4 teaspoon baking powder
• Cooking spray
• 1 1/2 cups powdered sugar
• 2 1/2 tablespoons skim milk
• 1 teaspoon unsweetened cocoa

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