Roast the beets. Follow my instructions here. Once the beets have cooled, and you’ve removed the skins, cut them into 1/4 inch thick wedges and set aside in a medium mixing bowl.
Toss the beets with the lemon juice and olive oil and season to taste with salt and pepper. Sprinkle the cheese and pistachios over the dressed beets. Serve the beet salad atop a bed of arugula or mixed greens for a main course salad, or alongside a simple chicken breast for a well-balanced dinner.