1 (16-ounce) can refried beans

3 large avocados
3 tablespoons fresh lime juice
2 (8-ounce) containers nondairy sour cream
1 packet taco seasoning (I use Bearitos, but if you are avoiding all white sugar, make your own mix with chili powder, ground cumin, onion powder, hot paprika or cayenne, and salt)
1/2 cup diced mild green chiles, drained
1/2 cup sliced black olives, or more if you like
5 tomatoes, chopped
2 cups shredded vegan Cheddar cheese