I was inspired to cook mashed potatoes using olive oil instead of butter after I tasted the rich and creamy Olive Oil Smashed Potatoes at Birreria, the rooftop beer garden at Eataly in New York City. These Tuscan mashed potatoes have a great flavor from the olive oil, roasted garlic, and rosemary. Obviously, using a good quality extra virgin olive oil is the key to this recipe. Omitting the cream will result in a healthier dish, that is both vegan and gluten-free, with a more distinct olive oil flavor.