Cook, stirring continuously, 1 to 2 minutes, or until wilted. Preheat the oven to 200°C/180°C fan/Gas 6. Melt the butter in a separate saucepan over a low heat, then stir in the flour to make a roux and cook, stirring, for 1 minute. Cut the butter into items and melt it in a small pot. 2021-10-26 Instructions. Preheat your oven to 350F (175C) Bring a pot of water to a boil with the salt. Put aside. Meanwhile, add a tablespoon of salt to a big pot of water and produce to a boil. I’ve bought the ...