Prep Time: 10
Cook Time: 5
Serves: Serves: 4*
Preheat broiler. Place bread on a cookie or baking sheet. Broil 4 inches from heat source until lightly toasted, 1 to 2 minutes.
Turn bread over; top with cheese. Return to broiler; broil until cheese is melted, 1 to 2 minutes.
Transfer bread to 4 serving plates; top with avocado and bacon. Toss greens with dressing; arrange over open-faced melts. Serve immediately.