Prepare the Dressing: Blend the avocado, mayonnaise, lemon juice, Dijon mustard, garlic, salt, and 1/4 cup water in a blender or food processor until completely smooth.
Adjust the Consistency: Add more water as needed until the dressing reaches your desired consistency, then taste and adjust the seasonings.
Prepare the Kale: Remove and discard the hearty kale stems, then tear or chop the leaves into thin pieces and place them in a large bowl.
Massage the Kale: Drizzle the kale with the oil and a pinch of salt, then use your hands to massage the leaves until they begin to soften and wilt.
Add the Dressing: Drizzle the prepared dressing over the softened kale and add the black pepper.
Toss the Salad: Lightly toss the kale until the dressing and black pepper are evenly distributed throughout the leaves.
Add the Avocado: Arrange the sliced avocado over the dressed kale.
Finish with Toppings: Add any desired optional toppings, such as microgreens, hemp seeds, cooked chicken breast, feta, or Parmesan, before serving.