Mix together the mince meat, garlic and onion powder, paprika, salt/pepper, breadcrumbs, egg, oregano and basil until combined well.
Using your hands make a patty out of a small portion of the meat mixture, approximately the size of your palm if not a tiny bit bigger.
In a separate bowl mix together the Ricotta Cheese, Parmesan Cheese, Parsley, Salt/Pepper and Cheddar Cheese.
Place a small amount of the cheese mixture (a heaped teaspoon) in the middle of each meat patty and fold to create a meatball. If there are cracks in the outside of the meatballs, try to rub them over with your finger. This will help to prevent them from cracking open during cooking.
Dice the Onion/Mince garlic and brown in a pan before transferring to the Slow Cooker. Add the Pasta Sauce, Tinned Tomatoes, Sugar, Salt/Pepper and any other ingredients you would like in your sauce. I also added a cup of water at this stage to make sure there was enough sauce to cover two layers of meatballs.
Once the sauce is in the Slow Cooker, Lightly grease a pan and brown the meatballs. Use a spoon to lightly flick the meatballs over when needed.
Transfer meatballs to the Slow Cooker carefully. I get two layers out of this recipe. Cover with lid.
Cook on Low for 6 hours.