Olive oil is a key part of this healthy way of eating, replacing butter, margarine and other fats. High in monounsaturated fat, olive oil helps lower LDL (bad) cholesterol while maintaining HDL (good) cholesterol. And it’s a good source of antioxidants including vitamin E.For more healthy dishes substitute STAR olive oil for butter, margarine, or other vegetable oils.  Make an ounce per ounce substitution when a recipe calls for other oils.  Replace butter and margarine in any recipe using our conversion chart.