For the hummus layer: Begin by draining and rinsing your black beans. Set inside a food processor or blender. Add 1/2 cup chopped cilantro, 2 tbsp lime juice, 1/2 tsp chipotle powder, 1/2 tsp cumin, olive oil, minced garlic, water, and 1/4 tsp salt. Blend until beans are nice and smooth. You may need to add a bit more water if mixture is too thick. Spread hummus layer across the bottom of a serving plate or dish.
For the Greek Yogurt layer: Mix together yogurt, 1/2 tsp cumin, 1/2 tsp chipotle powder, ground coriander, and 1 tbsp lime juice. Spread on top of the hummus layer.
Add chopped fresh tomatoes, then onions, then cilantro.
Finish the dip off with avocado.
Notes
Can be made ahead up to 8 hours, but wait to add avocado until right before serving.