Vegetarian Bean and Cheese Enchiladas

Name: Vegetarian Bean and Cheese Enchiladas
Cook time: 40 min
Total time: 40 min
Cuisine: Mexican, Latin American
Ingredients: 2 tablespoons olive oil; 2 medium yellow onions, finely chopped; 1 red bell pepper or poblano chile, stemmed, seeded and cut into 1/4-inch pieces; 4 garlic cloves, peeled and thinly sliced; Kosher salt and black pepper; 1 1/2 teaspoons ground cumin; 1 (15-ounce) can fire-roasted tomatoes, preferably crushed (see Tip); 2 teaspoons chili powder; 1/2 teaspoon hot sauce or 1 chipotle chile in adobo, chopped (optional); 1/4 cup sour cream, plus more for serving (optional); 2 (15-ounce) cans black beans, rinsed; 5 ounces mild Cheddar or Monterey Jack cheese, grated (about 1 1/4 cups); 10 to 12 (6-inch) soft corn or flour tortillas; Fresh cilantro leaves and stems, for serving