Preheat oven to 375 degrees Fahrenheit.

In a baking pan, combine Yukon Gold potato slices with two tablespoons olive oil, one and a half teaspoons salt, one teaspoon onion powder, and one tablespoon oregano. Toss to coat.

In another baking pan, combine sweet potatoes with two tablespoons oil, one and a half teaspoons salt, one teaspoon garlic powder, and one tablespoon oregano. Toss to coat.

Cover and bake both pans of potatoes for 40 minutes. Uncover and bake an additional 20 minutes.

To plate, use a spatula to stack three pieces, rotating between the two types of potatoes, as seen in photo.