01 -
Position oven rack 5-7 inches from broiler and preheat on high.
02 -
Halve tomatillos and place cut-side down with peppers and garlic on foil-lined sheet.
03 -
Drizzle vegetables with oil and salt, then broil about 5 minutes per side until charred.
04 -
Transfer peppers to sealed plastic bag for 10 minutes to steam skins loose.
05 -
Peel skins from peppers, optionally remove seeds and ribs for less heat.
06 -
Blend roasted vegetables with cilantro, lime juice, cumin, salt, and pepper.
07 -
Add avocados and raw onion, process until smooth.
08 -
Adjust seasonings to taste and serve immediately.