My husband’s friend had given him a bunch of home-grown rhubarb and I decided to bake him rhubarb crumble using this recipe. But I had made too much of the crumble part and decided to make ice cream crumble for myself. So I mixed in almond flakes, sunflower seeds and chocolate chips into the crumble. I then laid it flat on to the Pyrex cooking sheet and baked for 10 minutes.