Cut each pepper first in lengthwise and make a triangle shaped cut. Remove this part and set aside.
Pop the seeds and ribs from the interior parts and discard them.
Sprinkle the insides of the peppers with salt and rub with crushed garlic.
Cut the removed parts of the peppers into mini cubes.
Grate the white cheese. Mix with cubed peppers, black olives and dried origano.
Spoon the cheese mixture equally into each pepper cavity.
Sprinkle with sesame seeds.
Place them to a parchment paper covered tray.
Pour each pepper extra virgin olive oil.
Put the stuffed peppers to a 200° C pre-heat grill and cook until tender for about 20 minutes.
Remove the peppers to a serving platter.
Sprinkle with fresh origano leaves and serve immediately.

You can read a related recipe from here.
Gül, this is such a fantastic idea! Thank you so much for sharing! I was inspired to play around and this is my take these stuffed peppers http://www.deliciousistanbul.com/blog/2012/09/26/stuffed-green-pepper-boats/.