What type of meal are you referring to? Are you thinking of meals where tomatoes are served on their own (e.g. in a traditional English cooked breakfast) or meals where tomatoes are used as an ingredient (e.g. in chilli con carne)?
>>> would this work for meals such as... Sausage casseroles ? When it calls for cherry tomatoes?
Simply leave them out or substitute with anything that you like (such as mushrooms or sliced peepers). While I might glance at a printed recipe for a bit of inspiration, I can't ever remember actually following one to the letter. My cooking is based upon throwing in what I like and leaving out what I don't like. It seems to work for me!
The issue with me is, because im not totally experienced in making sauces etc.. (I have a good basic level of cooking across the board) I don't know if cherry tomatos are essential for their moisture content or not.
If it was moisture content that the recipe required, then tinned tomatoes or, say, beefsteak tomatoes would be in the recipe. Cherry tomatoes are usually only included when the idea is to have something to bite on (rather than the tomatoes being 'absorbed' into the meal).
Stop worrying and experiment. You'll occasionally end up with something that's not quite as nice as you'd hoped for but you'll also discover lots of great new food combinations that way ;-)
Bread works well in casseroles, it’s just a filler like potatoes or pasta or rice.
And I totally agree with mamy, recipes are just for guidance, I never slavishly stick to them, just add or leave out what we like or don’t like. Except for baking cakes.
Think of cooking as an art, and baking as a science.