Preheat the oven to 400°F.

Line a baking sheet with parchment paper. Set aside.

Peel the beets and cut into 3/4-inch cubes.

Arrange the cubes in an even layer on the prepared baking sheet.

Drizzle the beets with the olive oil, then sprinkle them with the salt and black pepper. Use a rubber spatula to toss the beets until they are evenly coated.

Roast the beets on middle rack of oven, stirring twice during the cook time, until they are fork-tender and slightly caramelized, 45-55 minutes.

Check to see that beets are done. Remove from oven add time as needed.

Serve immediately.