When choosing oils, canola oil or olive oil will be the most heart healthy. But it will be better to cook with canola oil and leave olive oil raw. This is because canola oil has a very high smoke point and can be heated to a much higher temperature. Olive oil is very fragile and will smoke very quickly at even low temperatures which may disrupt the healthy fats. So bake, saute or cook with canola oil and use olive oil in salad dressings or hummus.