This looks yummy, I like coffee cake even though I don't drink coffee......lol I don't know how Michigan's blueberry crop is this year. I do know that the cherries didn't do good due to the cold spring. How long would you say blueberries last frozen? I have some that is a few years old in my freezer....lol I too froze a lot one year. Kimberly, any berry that's frozen will gradually deteriorate, but I've used berries that have been in the freeer for several years. So long as you bake them enough to get out any "freezer taste," they seem to be fine. Go for it! PJH

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