Your cobbler could be soggy for a couple of reasons. First, the fruit used was extra juicy! This isn't the case if you used canned fruit filling, though. Secondly, your cobbler could be soggy if you haven't let it cool long enough after baking. You don't have to let your cobbler cool completely, but it should sit for 10 minutes or so after it comes out of the oven so it can finish thickening up.