Hello, I'm having a mare trying to make a dome cake out of a 2 litre pirex dish. I've baked it 3 times now and all of them have sunk They have been in the oven at 150c for 1.5 hours. Is it to do with the way I'm making up the mixture or the temp of the oven? I'm basically chucking all the ingredients together and blending them and filling the pirex dish about 2/3 full. Any help would be greatly appreciated please as I'm losing the will to live! Thanks

If they're sinking it sounds like it's not cooked all the way. Do you test the cake to see if it's done? You may need some sort of heating core in the middle to get it to cook evenly.

Try placing a greased and floured icing nail in the middle to radiate the heat to the centre of the cake.

Ah thank you - that's really good advice! I've heard about these but never tried them but will now. Does anyone know how full I should fill the pirex dish with cake mixture? Is two thirds ok? Thanks again!