It's the most simple sauce ever and it's amazing!
Chop an onion super small (put in blender if you can until almost mush)
Fry for 3 mins
Add a finely chopped garlic clove
Fry for 2 mins
Add a tin of chopped tomatoes
Add 100mls water and a chicken stock cube
Stir
Cook for 10-30mins
Add handful chopped basil
Pepper to taste
done
Enjoy!!