Directions

In a medium saucepan combine black beans, salsa, chili powder and cumin. Simmer mixture for about 5 -10 minutes, stirring occasionally. Slightly mash beans if desired.
Meanwhile in a food processor pulse together avocado, Greek yogurt, cilantro, lime juice and garlic until cilantro is finely minced. Season with salt and pepper to taste (if you want the sauce thinner you can add in 1 Tbsp water).
To assemble tacos, on each tortilla layer black bean mixture, avocado cilantro lime crema, lettuce, cheese and tomatoes. Serve immediately.