I use tomatoes almost all the time when cooking: stews, casseroles, chicken, any pasta dish.... everything. I think the only thing I haven't tried it with is salmon.
Putting recipe in brackets because I make my own and never use the same amount of anything, but it always ends up good.
My basic tomato "recipe" is:
chopped tomatoes
finely chopped onions
grated or crushed garlic (I usually use a whole bulb of garlic = ca 8-12 cloves)
grated or sliced carrots (I usually grate, because my son don't like cooked carrots)
salt and pepper
I add lime juice too, from at least 1/2 lime, but I don't think it's neccessary.
I prefer to fry in olive oil (on low), but have steamed too.
If you steam, add the olive oil, salt and pepper when everything is in the saucepan.
Add whatever: all, none, some, or just one:
Fresh basil or oregano (chopped -great with pasta dishes)
Broccoli
Chopped peppers in any or all colours
Cream, sour cream, or creme fraiche (best with chicken and turkey dishes, but goes with everything - do not add until you use the original sauce.)
Any other veg or herb.
Invest in plastic boxes or jars that can be kept in the freezer, and labels, if you need them.
Keep in the freezer and you have healthy meals for a year
ETA: My quickest recipe is pasta, tuna (from a can) and this pasta sauce Add lettuce, spring onions, chives, grated cheese, apple slices, or whatever...
Good luck with your tomatoes.