Preheat your oven to 400°F. Line a medium-sized baking sheet with foil. Wrap each beet individually in foil, ensuring they’re tightly sealed, and place them on the lined baking sheet. Bake for about 1 hour or until the largest beet can be easily pierced with a fork.
Unwrap the beets and let them cool to room temperature. Once cooled, peel off the skins. Pro Tip: To avoid staining your hands, wear disposable gloves. Simply rub the beets, and the skins will slide right off.
Cut off the root end to remove any part of the beet that touched the foil, then slice the beets into small, bite-sized pieces.
Toast the pecans in olive oil and brown sugar, stirring frequently until they’re golden and fragrant. Remove from heat and allow them to cool.
Place the arugula in a large mixing bowl, then add the rest of the salad ingredients: chopped beets, feta cheese, and toasted pecans.