Standard Muffin Recipe

We need to do the "egg ladder" for our baby's egg allergy, and our doctor asked the first step to be a muffin with 2 cups of flour and 1 egg. I couldn't find a simple (banana free) recipe without sugar, so I used this. I added coconut sugar instead of granulated - that may have altered the taste. I really like it, but next time I'd try getting it out sooner than 20 min.