I found this recipe in a Taste of Home magazine and finally tried it out this year with our leftovers from Thanksgiving. Very good and filling - I think a half an English muffin was perfect!
1 large ripe avocado, peeled and pitted
1 T lemon juice
2 T mayo
2 T sour cream
1/4 t hot pepper sauce
6 English muffins, split and toasted
12 slices turkey breast
12 slices tomato
12 slices cheese (I used Swiss)
12 bacon strips, halved and cooked
Place muffin halves, cut side up, on cookie sheet lined with foil. Mix together avocado, lemon juice, mayo, sour cream and hot sauce till blended. Spread over muffin halves. Layer turkey, tomato, and cheese on top.
Broil on low for 3-4 minutes until cheese is melted and then add bacon to the top of each open-faced sandwich. May broil an add'l minute to get bacon "stuck" to the melted cheese.