Whisk balsamic vinegar, extra virgin olive oil, salt, and pepper in a small dish and set aside.
Dice roasted beets into bite-sized pieces and place them in a bowl.
Coarsely chop fresh thyme leaves and parsley and add them to the bowl with the beets.
Drizzle with the vinaigrette.
Dice feta cheese into cubes and add them to the bowl with the beets and herbs.
Toss the salad, transfer it to a serving plater, and garnish it with more fresh herbs.