Mushroom and Lima Bean Stew

dried lima beans

extra-virgin olive oil, plus more as needed

large onion, diced (2 cups)

garlic, thinly sliced

shiitake mushrooms, trimmed and thinly sliced

portobello mushrooms, trimmed and cut into 1-inch pieces

butternut squash, peeled, seeded, cut into 1-inch pieces

bay leaf

low-sodium chicken stock

Freshly ground black pepper

bunch kale (8 oz.), stems removed and leaves thinly sliced (6 cups)

Kosher salt