Preheat oven to 180°C.
Heat oil in a pan and fry the onion until soft.
Add the beef mince and fry until well browned.
Stir in the KNORR Savoury Mince Dry Cook-in-Sauce sachet contents together with the water and baked beans and Robertsons Italian Herb.
Allow to simmer uncovered for 20 minutes, stirring occasionally then toss with cooked macaroni and transfer to an ovenproof casserole dish.
Top with desired amount of grated cheddar cheese and place in a preheated oven at 180°C for 10 minutes or until golden brown and the cheese has melted.