Greens of your choiceI used romaine and butter lettuce.
To make the spread, place the avocado in a small bowl and mash with a fork. Stir in the yogurt and vinegar, then add salt and pepper to taste.
To assemble the sandwiches, divide the avocado spread evenly between two slices of bread. Top each slice with half of the ham, eggs, bacon, tomato, greens and blue cheese. Season with additional salt and pepper, if desired. Place the remaining bread slices on top of each sandwich and enjoy!