What to do with 20 pounds of blackberries? Part 3

Ok, maybe I should've titled this: What to do with a gazillion pints of jam? When I think of jam, I think of THUMBPRINT COOKIES!

What to do with 20 pounds of blackberries? Part 1

Whenever I have an ingredient that I want to use, I google it and recipe and see what comes up to help me think outside the box. One of the things that came up was muffins, so I did a couple more searches and found this recipe. It turned out to be the best fruit muffins I've ever had! I doubled the recipe and it made almost 4 dozen. I gave several away to my family and my in-laws, and everyone really enjoyed them. The sour cream and fruit made them extremely moist. I froze some fruit and can't wait to make them again!