Mmm so good! I followed the actual recipe and did not substitute anything. My baking time did change however. I baked as directed for 25 mins. at 375. The middle was still gooey so I covered the whole thing in aluminum foil, decreased by oven by 10 degrees and left it in there for another 20 mins. I did double the recipe but realized that I only had about 2 1/2 cups of blueberries...no worries! It is a still a perfect amount of fruit and the taste is so yummy.