Prepare a quarter sized baking sheet by lining with a piece of parchment paper.
Wash and peel the beets. I like to use a vegetable peeler.
Cut the beets into even cubes between 1-2 inches in size.
Place beets in the prepared baking dish and drizzle with olive oil and salt.
Toss to coat the beets evenly.
Remove the leaves from the sprig of rosemary and add to the beets. Gently toss to coat the beets with the rosemary.
Bake in preheated oven for 35-40 minutes until fork tender. Stir the beets halfway through the process.
Notes
Store leftover beets in an airtight container in the fridge for 2-3 days.Reheat the beets by placing them on a baking sheet or cast iron skillet and put the pan in a cold oven. Turn the oven on 350 degrees F and after it has preheated the beets will be warmed through.