Prep lettuce and avocado: Chop lettuce, cube avocado, set half aside for dressing and half for topping.
Blend avocado creamy dressing: In a blender, blend avocado, yogurt, oil, lemon, garlic, parmesan, Dijon, salt, and pepper until smooth.
Toss salad base: In a big bowl, combine lettuce with half the creamy dressing, tossing everything so it’s coated.
Add toppings and finish: Sprinkle croutons and reserved avocado cubes, then gently toss with more dressing if needed.
Serve and enjoy: Sprinkle extra parmesan and fresh pepper—dig in while it’s crisp and the dressing is cool.