SLICE loaf of bread in half lengthwise. Open up both halves.
SPREAD Ranch dressing evenly on both sides of bread. Divide sliced turkey on each side of bread, then top with cheese.
PLACE both halves of sandwich on broiler pan. Place under broiler and heat on High for 1 to 2 minutes or until cheese has melted.
REMOVE from oven. Divide banana peppers and spinach leaves on top of cut halves.
TOP with Sabra guacamole. Put halves together and slice into serving size pieces.