1
Adjust rack to top position (top and middle positions for 8 servings) and preheat oven to 425 degrees. Bring a large pot of salted water to a boil (two large pots for 8). Wash and dry produce.
Peel and mince or grate garlic. Halve, peel, and thinly slice onion. Halve, core, and thinly slice bell pepper into strips.