Zuppa Toscana

uncooked spicy Italian sausage, casings removed

large onion, diced

garlic, minced

Kosher salt

Freshly ground black pepper

low-sodium chicken broth

large Russet potatoes (about 2 1/2 pounds total), cut in half, then cut into 1/4-inch-thick half-moons

gently packed chopped curly kale leaves (from about 1/2 of a large bunch)

heavy cream

Grated Parmesan cheese, for serving