Vegan Tacos with Mushrooms and Tomatillos

1 . Stage

Set oven rack about 6 inches from the heat source and preheat the oven's broiler. Line a baking sheet with aluminum foil. Place tomatillos on top, cut-side up.

2 . Stage

Broil in the preheated oven until tomatillos have a dark brown color and are caramelized, about 20 minutes. Remove from oven and allow to cool slightly.

3 . Stage

Toast chile de arbol peppers in a small skillet over medium heat, turning once, until starting to brown lightly in spots (don't char), about 3 minutes. Transfer to a plate.

4 . Stage

Heat oil in a large skillet over medium heat while tomatillos cool. Add mushrooms and cook, stirring frequently, until softened, about 5 minutes.

5 . Stage

Combine 3 tomatillos and arbol chiles in a blender; blend until smooth. Pour over mushrooms in the skillet. Add remaining tomatillos with the roasting juices from the baking sheet. Mix well and cook over low heat until mushrooms have softened, 5 to 8 minutes. Season with salt.

6 . Stage

Warm corn tortillas in a skillet. Divide mushroom mixture amongst tortillas and top with chopped onion and cilantro.