Back in the day I owned and ran a bakery called Great Cakes, where the original recipe for this blueberry cheese crumb cake hails ... Grease and flour a 10-inch springform pan. A springform cake pan ...

Grease a 9x13 casserole dish or cake pan. Set aside. Place all crumble ingredients ... sugar and corn starch. Pour blueberry mixture onto the bottom layer. Sprinkle the remaining oat/walnut ...