PREPARATION
Preheat oven to 375°. Lightly grease 2-quart shallow baking dish; set aside.
Heat olive oil in medium saucepan over medium-high heat and cook onion, stirring occasionally, until golden brown, about 6 minutes. Remove from heat and stir in Knorr® Carbonara sauce mix, cream, water and salt. Arrange a layer of potatoes in prepared baking dish. Pour 1/3 of carbonara mixture over potatoes, then sprinkle 1/3 cup cheese. Repeat layers twice ending with cheese.
Bake covered for 45 minutes. Uncover and bake for 15 minutes or until potatoes are tender and golden brown.
