I've got a glut of marrows and found a recipe on bbc good food for a marrow, pecan and maple cake. I was thinking of adding raisins instead of pecans as I would do a carrot cake (then the kids will eat it!). However I normally bake my carrot cake in a loaf tin and I don't have a deep round baking tin. The recipe suggests a 22cm round tin and cook for 1hr 20. Will it be a disaster if I use a 2lb loaf tin instead. Guessing it might need longer cooking time as deeper?