2Place half of the tomatillos, the quartered onion, garlic, and habanero on a sheet tray. Broil until lightly blackened and tender, flipping halfway through for even cooking.
3Remove from the broiler, peel the garlic, and remove the chile stems.
4Transfer the roasted vegetables to a blender along with the cilantro, salt, bouillon, and the remaining raw tomatillos. Blend until your desired consistency is reached.
5Fold in the rinsed diced onion. Taste and adjust seasoning as needed.