One day, I was craving a milkshake, but I wanted to bake some muffins. So I came up with this! I love how light and moist these turn out. If you want to use fresh or frozen strawberries, I guess you could blend a 1/2 cup strawberries with 1/2 cup plain yogurt or sour cream or buttermilk. I'm waiting for strawberry season to try that out!