What about this recipe for a basic pasta sauce.
It can be frozen and then easily thawed and heated in the microwave.
U could freeze it in individual portions, in tubberware.
1 Kg tomatoes
Half kg carrots
2 to 4 onions
1 to 10 cloves of garlic
1 or 2 teaspoons salt
Olive oil. 1 to 4 tablespoons
Dried herbs. 1 tablespoon of one or all of the following. Marjarom, oregano, rosemary.
Fry Onions and garlic in olive oil(u can use a cheaper oil, like vegetable, if u want, but it is not as good tasting and not as healthy), with the salt, until golden brown.
In a separate pan, cook the carrots, until soft, in as little water as it takes to cover them, with the lid on the pan. If the water evaporates, and there is none left, then add more.
Add the tomatoes and herbs to the garlic and onion pan. When the carrots are soft, then add them to this pan too. Cook with the lid on, at a medium temperature, for a while. Maybe 10 minutes. if the mixture appears to be drying out, then stop cooking.
Puree, with a food processor.