If grilling your veggies, preheat the grill to medium. Place the green beans in a grill basket or on a sheet of aluminum foil laid over the grill plates. Place the whole red bell pepper directly over the flames and allow it to char on each side. Alternatively, you can preheat your oven to 415 and roast the green beans and bell pepper on a sheet pan. The pepper won’t get the same char, but the skin can get left on in this case.