3 pear potato gratin Recipes

butter divided, white onions sliced, chopped fresh thyme, fine sea salt divided, water, dry white wine, granulated sugar, yukon gold potatoes peeled and cut into 1/4 thick rounds, pears peeled halved cored and cut into 1/4 thick slices

garlic cloves, peeled, marsala wine, heavy cream, russet potatoes, 1 1/2 lb, peeled and thinly sliced, pears, peeled, cored, thinly sliced, salt, pepper, gorgonzola, crumbled, pecans, lightly toasted, chopped, fresh rosemary, chopped