Vegan Guac Lover’s Burrito Bowl with Brown Rice, Black Beans & Spiced Mushrooms

Wash and dry produce.

Halve, peel, and thinly slice half the onion; dice remaining half. Cut onion slices in half crosswise. Zest and quarter lime. Roughly chop cilantro. Thinly slice mushrooms (skip if your mushrooms are pre-sliced!).