Just normal pasta sauce?
For a tomato pasta sauce I blitz a tin of tomatoes add my seasoning, tomato paste (helps to thicken the sauce), veg stock (or any stock) and whatever else I'm cooking with it and simmer it with chunks of carrot and remove the carrot before serving. Cooking the tomatoes with a carrot takes away the acidity of the tomatoes. If I don't have tomato paste I use ketchup (works the same and adds a sweeter taste to the sauce)
I cook a mixture of whatever veg we have in the fridge (usually carrots, broccoli, peas, corn, red peppers, etc) and will add some tomato paste and a can of chopped tomatoes. I’ll add some garlic and let it simmer. Then blitz it and store in ice cube trays. Much the same as the first comment! My toddler is a super fussy eater and this is the only way I’ve been able to feed her some veg!
I tend to roast a load of veg in the oven with garlic. Add herbs and tinned tomatoes/stock and blitz it all together and freeze it in batches xx
Tinned Tomatoes with any veg
I blend fresh tomatoes in a blender, chuck it on a pan with some salt and olive oil, cook for 30-40mins on low heat until sauce thickens, add garlic and basil - best sauce ever 🥰
Any veg you’ve got around - onions, celery, carrot, leeks, courgette etc, chop and fry off with garlic until starting to soften. Add passata or chopped tomatoes, low salt vegetable or chicken stock cube, mixed herbs, and simmer until all veg is soft, then blitz. As they get older I’ve added things like dash of Worcestershire sauce, or a Parmesan rind for extra flavour. I freeze this in ice cube trays then defrost as many cubes as I need at a time, great for pasta as is, mix with cream cheese, use as a pizza tomato sauce on pittas/crumpets etc.