Originally, they are Cocoa Raspberry Muffins from Vegan Brunch. But, I didn't have enough raspberries for the recipe and did have enough frozen strawberries that were begging to get out of my freezer. The substitute was definitely a success but I can see how raspberries would be a bit better. The strawberries did lose a lot of flavor and the texture was much more gooey than raspberries would have been. At any rate, these muffins were very delicate and moist and lasted less than a day in our house!