For a recipe that didn't require milk and I could use frozen berries, I thought it was delicious and not bland. I did increase the baking time, as suggested, which is what prevented the muffins from being crumbly.
Followed the recipe exactly with an inkling it wouldn't turn out well. The muffins were crumbly, colorless and bland.
I found the consistency of the mixture very heavy and thick, not as smooth as I'm used to with other muffin recipe's I've used. So, I added 2 bananas and it seemed to work well but still a little bland for my tastes.
I really enjoyed these! to make it slightly healthier, I did 1 cup of all purpose flour, 1/2 cup of whole wheat flour & 1/4 cup of buckwheat flour. Then I replaced 2 tablespoons of oil with 2 tables of my friends homemade applesauce. Delicious!