1Onion, diced1 TbspOil1Garlic clove, sliced500 gChicken breasts, finely chopped (Main)½ cupWater1Stock, pod or 2 teaspoons chicken stock powder250 gRicotta cheese130 gBaby spinach, leaves12Cannelloni tubes (Main)1 jarTomato pasta sauce½ cupParmesan cheese, grated, plus extra shaved parmesan