01 - Combine warm water, sugar, and yeast in a large bowl. Let stand for 5 minutes until mixture becomes foamy, indicating yeast activation.
02 - Stir olive oil and salt into yeast mixture. Gradually add flour, stirring until dough forms. Turn onto floured surface and knead for 8 minutes until smooth and elastic.
03 - Place dough in an oiled bowl, turning to coat all sides. Cover with plastic wrap or towel and let rise in warm place for 1 hour until doubled in size.
04 - Preheat oven to 375°F. Grease a 9-inch round or square baking dish with butter or cooking spray.
05 - Punch down risen dough to release air. Roll out on floured surface into a 1/2-inch thick rectangle.
06 - Sprinkle dough evenly with olives, sun-dried tomatoes, feta cheese, parsley, basil, garlic, oregano, and black pepper.
07 - Cut filled dough into 2-inch squares. Stack squares into small piles, then arrange standing upright in prepared baking dish, packing tightly together.
08 - Drizzle assembled bread with olive oil and sprinkle with sesame seeds. Bake for 30 minutes until golden brown and cooked through.
09 - Allow bread to cool in pan for 10 minutes before serving warm.