Preheat oven to 380 degrees F (193 degrees C).

Mix beets and 1 teaspoon olive oil together in a bowl until coated; spread onto a baking sheet.

Bake beets in the preheated oven for 15 minutes.

Mix sweet potatoes and remaining 1 teaspoon olive oil together in a bowl until coated.

Flip beets using a spatula and add sweet potatoes to the baking sheet.

Cook beets and sweet potatoes until tender, about 15 minutes.