Lay out brioche slices onto a flat work surface and spread one side with Western Star Spreadable butter.

On the unbuttered side of 2 slices, place a slice of cheese, then top with pesto, chicken and avocado. Top with remaining cheese.

Cover with second slice, making sure that the butter side is facing out.

Preheat a large non-stick frying pan over medium low heat, then cook 3-4 minutes each side or until cheese has melted and bread is golden. Remove and serve immediately top with extra butter.