Chocolate-Banana Snack Cake

Ingredients:

• 1/2 cup unsweetened applesauce
• 1 cup granulated sugar
• 1/4 cup butter, softened
• 1/2 cup mashed ripe banana
• 2 large eggs
• 1 teaspoon instant coffee granules
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour (about 4 1/2 ounces)
• 1/2 cup unsweetened cocoa
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• Powdered sugar (optional)

Source