Prep the tomatillos & peppers
Remove the husks from the tomatillos and give them a quick rinse. Cut the peppers in half and remove the seeds if you want a milder salsa.
Roast under the broiler
Place tomatillos and peppers on a baking sheet. Broil for 2–3 minutes, flip, then broil another 2–3 minutes until the skins blister and char slightly. This step adds smoky flavor.
Blend everything together
Add roasted tomatillos and peppers into a food processor along with cilantro, lime juice, garlic, salt, and agave. Blend until smooth.
Adjust to taste
Taste the salsa and adjust seasoning. Want it spicier? Add the other half of the peppers or toss in a serrano. Want it creamier? Add half an avocado.
Serve & enjoy
Transfer to a bowl and serve immediately, or chill in the fridge to let the flavors develop even more.