Step 2) Heat 1-1/2 teaspoons oil in a large, nonstick skillet over medium-high heat. Add carrots and onion and cook 2 minutes. Add sprouts. Season with salt and pepper. Cook and stir until vegetables start to soften, 4 to 6 minutes. Whisk together 1 tablespoon juice and mustard; stir into vegetables. Place vegetables on serving tray.