Patzee I had the same problem as you when I made a batch - looked good but collapsed once filled. I have checked a Woman's Weekly cookbook recipe for the times etc and they suggest cooking in a hot oven for 10 mins (200o?) then reducing the heat to moderate (180o?) and cooking for 20 mins until golden brown and firm to touch. Remove from oven, make a small slit in side for steam to escape. Return to oven for a few mins to dry out. This time is for small puffs, they suggest 35-40 minutes overall cooking time for large ones. Hope this helps. My sister-in-law makes excellent cream puffs and she tells me she cooks them at 200o for 15-20 minutes then reduces the heat to 180o for the rest of the cooking time - she makes large puffs. Like you, I was convinced if the machine could make the mixture, I would turn out a perfect batch of puffs and although the mixture looked perfect, the times in the book are obviously incorrect.