Rach likes to serve these with her Spicy Vegetarian Refried Beans and Green Rice.
Heat broiler to high and place oven rack 1 slot down from top of oven. Line a small baking sheet with foil and arrange tomatillos, onion, jalapeno peppers and garlic on pan, spray with cooking spray, and season with salt and pepper. Char the ingredients evenly, then cool to handle. Peel and seed peppers, and remove garlic from skins. To a food processor bowl, add tomatillos, onions, peppers, garlic, a small handful of cilantro, honey or agave, about 1 teaspoon of ground cumin, 1/3 palm full, and juice of 1 lime, process salsa until almost smooth and adjust salt and pepper to taste. Place salsa in bowl and rinse food processor bowl and return to base.
To food processor bowl, add the avocado, crema or sour cream, a handful of cilantro, salt and juice of 1 lime. Process into a smooth sauce, and transfer to small bowl.