Made this as a snack for a party. I had a plentiful garden of zucchini & wanted to make a healthier version of the mayo based spreads. I used parchment paper to roast the zucchini so I didn't have to use the cooking spray. I also found that 15 mins wasn't quite enought time so next time I'll cook closer to 20-25 mins. Tasty recipe & plenty of good comments from the party, thanks for sharing.