1
Adjust rack to top position (top and middle positions for 4 servings) and preheat oven to 425 degrees. Wash and dry all produce.
Dice sweet potato into ½-inch pieces. Trim and quarter mushrooms. Toss veggies on a baking sheet with a large drizzle of oil, garlic powder, salt, and pepper.
Roast on top rack until just tender, 18-20 minutes. (For 4, divide veggies between 2 sheets; roast on top and middle racks.)