Bananas and chocolate: add 1 banana at the start and 1/2 cup of chocolate chips at the end
Blueberries: add 1/2 cup frozen blueberries at the end
Raspberries and yogurt: add 1/2 cup raspberries at the end and replace the apple sauce with soy yogurt
Maple and pecans: add 1/2 cup chopped pecans and replace the sugar with 3/4 cup maple syrup
Apple and cinnamon: add 1 or 2 apples, cut into small cubes and 1 tbsp. cinnamon powder
Double chocolate: add 1/4 cup of unsweetened cocoa at the beginning and 1/2 cup of chocolate chips at the end
Carrots: add 1 cup grated carrots at the beginning and 1 tbsp. cinnamon