Sage and Cheddar Potato Gratin Recipe... Sage and Cheddar Potato Gratin Recipe Ingredients 2 teaspoons McCormick® Sage, Rubbed 1 1/2 teaspoons salt 1/2 teaspoon McCormick® Black Pepper, Ground 3 pounds Yukon Gold potatoes, peeled and thinly sliced 1 large onion, thinly sliced 1 package (8 ounces) shredded Cheddar cheese, (2 cups) 1 cup heavy cream