01 -
Season chicken breasts, cook in oil 6-7 minutes per side until done.
02 -
Slice avocado, prepare cheese, onions and tomatoes.
03 -
Layer mayonnaise and mustard on bread slices.
04 -
Layer chicken, avocado, cheese, onion and tomato on bread.
05 -
Cook sandwiches in butter until golden and cheese melts, about 3-4 minutes per side.