Fill a bowl with olive oil and brush the bell peppers with the olive oil
Place the bell peppers on a baking plate and put it in the oven for 15 minutes.
After 15 minutes turn the bell peppers and roast them for another 15 minutes.
The bell peppers are roasted for 30 minutes. In the last 20 minutes, turn the peppers once more after 10 minutes.
After 50 minutes of roasting the peppers they have a dark color, feel soft and have been shrinking. If this isn't the case. You need to roaster them for at least 10 more minutes.
Notities
After roasting the bell peppers in the oven you have the choice for seasoning. You can add some pepper and salt or eat them without any seasoning.