Cut loaf into 2cm thick slices, making sure not to cut right through.
In a bowl mix together the contents of the sachet of KNORR Three Cheese Pasta Sauce Pasta Sauce, margarine, cheese and basil pesto.
Spread liberally on both sides of slices. Spread any remaining margarine over the top of the loaf.
Wrap the loaf in 2 layers of foil and place onto the braai for 20-30 minutes.