4 potato and mushroom gratin with blue cheese Recipes

oil, butter, onions , halved then sliced, white button mushrooms, sliced (can use more mushrooms), russet potatoes (peeled and sliced very thin, about 1/8-inch thick ), whipping cream, blue cheese, crumbled (can use less blue cheese), mozzarella cheese, grated, salt and pepper

dried porcini mushrooms, golden potatoes, butter, cremini mushroom, sliced, fresh thyme leaves, salt and pepper, gorgonzola blue cheese, heavy cream, parmigiano-reggiano cheese, freshly grated

crumbled blue cheese (such as stilton, gorgonzola or maytag blue; about 1 1 /2 cups), room temperature, whipping cream, salt, pepper, butter, mixed fresh wild mushrooms (such as chanterelle, morel, portobello, stemmed shiitake, oyster, crimini or hedgehog), thickly sliced, chopped fresh thyme or 3/4 tsp dried, yukon gold potatoes, peeled, very thinly sliced into rounds