For the mashed potato layer:
2 1/2 lbs unpeeled red potatoes, cut into big chunks (1 1/2 inches or so)
1/2 cup unsweetened non-dairy milk, at room temperature
2 tablespoons olive oil
1 scant teaspoon grated lime zest
3/4 teaspoon salt (or to taste)

For the stew:
2 tablespoons olive oil (plus extra)
1 onion, diced medium
1 poblano pepper, seeded, diced medium
4 cloves garlic, minced
8 oz mushrooms, cut in half and sliced 1/4 inch thick or so
1 cup lightly packed cilantro, chopped
1 1/4 lbs plum tomatoes (about 6), chopped
1/2 cup corn (fresh or frozen)
1/4 cup dry red wine
3/4 teaspoon salt
1 teaspoon ground cumin
1/2 teaspoon crushed red pepper flakes
2 ounces tortilla chips (about 4 good-sized handfuls)
2 tablespoons lime juice
2 tablespoons Frank’s red hot hot sauce (plus extra for serving)
3 cups cooked black beans (2 15 oz cans rinsed and drained)

I garnished with: Hot red chilis, fresh cilantro and lime slices