Toss with 1 tablespoon olive oil and spread on a baking sheet.
Roast at 450° F, until tender, or approximately 35 minutes.
Transfer beets to a bowl and toss with Balsamic Vinaigrette and chopped scallions. Top with crumbled feta.
To make your own simple balsamic vinaigrette, simply whisk together ¼ cup balsamic vinegar, ¼ cup olive oil, 1 tsp honey, 1 tsp dijon mustard, 2 minced garlic cloves, ½ tsp salt and ⅛ tsp black pepper.