Good-Cooking - Double Chocolate Banana Muffins

Ingredients

• 1 1/2 cups all-purpose flour
• 1 cup granulated sugar
• 1/4 cup baking cocoa
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1/4 teaspoon baking powder
• 1 1/3 mashed ripe bananas (2 or 3 medium)
• 1/3 cup vegetable oil
• 1 egg
• 1 cup (6 ounces) regular or mini semisweet chocolate chips