3 potato gratin with mushrooms and gruyeere Recipes

olive oil, chopped leeks (white and pale green parts only; about 3 large), cubes assorted mushrooms (such as crimini and stemmed shiitake; about 10 cups), garlic cloves, minced, yukon gold potatoes, peeled , cut into 1/8-inch-thick slices, heavy whipping cream, more) salt, more) freshly ground black pepper, coarsely grated gruyere cheese

olive oil, chopped leeks (white and green parts only , about 3 large), mushrooms (such as crimini and stemmed shiitake, cut into 1/2-inch cubes, about 10 cups), garlic cloves, minced, yukon gold potatoes, peeled , cut into 1/8-inch-thick slices, heavy whipping cream, salt (or more ), freshly ground black pepper (or more ), coarsely grated gruyere cheese