My DS loves his Nan's spaghetti sauce with spiral pasta.

Finely diced onion cooked until soft
Add chopped apple (about half)
Add minced garlic
Cook until all soft
Add some chicken stock and tomato paste and cook together for a few mins
Blend all up together so you end up with a thick sauce

Serve over spiral pasta and grate some cheese on top.

Very messy as he eats with his hands at this stage but it's his favourite!