1
Adjust racks to top and middle positions (top, bottom, and middle positions for 4 servings) and preheat oven to 425 degrees. Wash and dry all produce.
Trim and halve Brussels sprouts lengthwise (quarter any larger ones if necessary). Dice sweet potato into ½-inch pieces. Halve, core, and dice apple into ½-inch pieces. Finely chop pecans and walnuts (or crush in their bags with a heavy-bottomed pan or rolling pin).