Sweet Potato Burrito Bowl

Name: Sweet Potato Burrito Bowl
Ingredients: 4 sweet potatoes (scrubbed); 1 carton cremini mushrooms (sliced); 1 bunch Swiss chard (chopped); 4 zucchini (sliced); 1 1/3 cups very hot water; 2 dried ancho chilies (stemmed, seeded, torn into pieces); 2 large poblano chilies; 1/3 cup whipping cream; 1 tsp maple syrup; 2/3 tsp red wine vinegar; 1 tomato (diced); 2 T onion (minced); 1/2 jalapeno (de-seeded, minced); 1/4 cup cilantro; lemon juice to taste; 1 avocado (cubed); 1 T onion (minced); 1 clove garlic; 1 can black beans (rinsed); 2 cups cooked brown rice; sour cream or yogurt