3 poblano potato and corn gratin Recipes

olive oil, divided, poblano peppers, stemmed, seeded and cut into thin strips, yukon gold potatoes, peeled and cut into 1/8-inch rounds, frozen corn, oaxaca cheese, grated (or mozzarella cheese), half-and-half, flour, salt, pepper

olive oil, divided, fresh poblano chiles,* stemmed, seeded , cut into 2 x 1/4-inch strips, yukon gold potatoes, peeled, cut into 1/8-inch-thick rounds, frozen corn kernels, thawed, coarsely grated oaxaca cheese or whole-milk mozzarella cheese, divided, half and half, all purpose flour, salt, freshly ground black pepper