There have been rare cases of allergic reactions to Quorn™ products, which contain my protein. Mycoprotein is made with a member of the fungi/mould family. Mycoprotein is high in protein and fibre which may cause intolerance in some people.. Bake Me at Home. Bake in 30 Minutes. Vegan Friendly. Crisp puff pastry filled with quorn mycoprotein and our unique seasoning. Air Fry in 14 Minutes. Greggs.