Ingredients:

4 Tablespoons all-purpose flour
3 Tablespoons sugar
2 Tablespoons peanut butter (add more if you want!)
1/8 Teaspoon baking powder
1 Egg white
4 Tablespoons milk (or soy milk)
1 Tablespoon vegetable oil (or unsweetened applesauce)
1/4 Teaspoon vanilla extract
1/8 Cup mini semi-sweet chocolate chips.
1 Microwave-safe bowl or mug

Instructions:
Mix flour, sugar and baking powder
Mix in egg white
Add in milk, peanut butter, oil and vanilla, and mix well
Put in microwave for 2.5 minutes (add 30 sec if necessary) on maximum power
Wait until it stops rising and sets in the bowl/mug