6 yam gratin with Recipes

canned low-salt chicken broth, all purpose flour, chopped fresh rosemary, salt, freshly ground pepper, red-skinned sweet potatoes (yams), peeled, thinly sliced, freshly grated parmesan cheese (about 4 1/2 oz)

butter, room temperature, divided, yukon gold potatoes, rinsed, red-skinned sweet potatoes (yams), peeled, whole milk, garlic clove, pressed, kosher salt, fresh thyme leaves, ground black pepper, ground nutmeg, whipping cream

heavy whipping cream, leeks sliced, fresh thyme leaves chopped, salt, freshly ground black pepper, ground nutmeg, parsnips peeled and thinly sliced, grated white cheddar cheese, cooking apple thinly sliced