I do a dish similiar to cacciatore in the slow cooker,

I throw into the slow cooker:
diced chicken fillets
Chopped onion
garlic
spag sauce
1 cup chick stock
2tbls basil
1 tbls rosemary
1 tbls sugar

you could add olives if you like or whatever else.

I give it a stir then chuck it on low for 6 hours or high for 3 hours or so

this is just how I do it, not an actual recipe so play around until your happy. It tastes awesome.