Growing kids. They are ALWAYS hungry!!
When I was growing up I can remember my mum making what we called "Kitchen Sink Muffins". We called them that because she put everything in them except the kitchen sink. I remember her making batches so big that she would mix them in half of her turkey roaster!
Now, her muffins were heavy as rocks, and more filling than just about anything I can think of, but they were tasty, cheap, and easy to throw at us as we came in hungry after school.