1
Adjust rack to top position and preheat oven to 425 degrees. Wash and dry produce.
Halve potatoes lengthwise; slice crosswise into ΒΌ-inch-thick half-moons. Halve, core, and thinly slice bell pepper into strips. Trim and thinly slice mushrooms (skip this step if your mushrooms are pre-sliced!). Peel and mince or grate garlic.