Mozzarella-Stuffed Meatballs

For tomato sauce Ingredients: 1tbsp olive oil 1/2 red onion 1 garlic clove 1 can (400g) chopped tomatoes 1tbsp paprika 1tsp brown sugar 1tbsp dry basil Salt and pepper to taste Method: Heat olive oil in a pan, add onion and garlic,stir occasionally . Fry for 2 minutes and add paprika, stir to coat and fry for another minute. Add chopped tomatoes, salt, pepper, dry basil and brown sugar, mix together and cook for 10-15 minutes ( or until thickened) on a medium heat. Remove from the heat and purée with emulsion blender to give it smooth consistency. Set aside to cool.