Preheat oven to 400 degrees F (204 C) and set out a large baking sheet.
Add sliced beets to the baking sheet and toss with olive oil, salt, and pepper. Toss to combine, then bake for 20 minutes, flipping at the 10-minute mark to ensure even baking.
Meanwhile, prepare the dressing in a small bowl or jar with a lid. Add balsamic vinegar, olive oil, maple syrup, and a healthy pinch each salt and pepper and whisk or shake to combine.
To a large bowl, add arugula, roasted beets, cherries, hazelnuts, and vegan feta (optional). When ready to serve, add dressing and toss to coat. Best when fresh.
