01 - Combine warm water, sugar, and yeast in a large bowl. Let sit for 5 minutes until foamy.
02 - Add olive oil, salt, and flour to the yeast mixture. Stir until a dough forms. Knead on a floured surface for 8 minutes until smooth and elastic.
03 - Place dough in an oiled bowl, cover, and let rise in a warm place for 1 hour or until doubled in size.
04 - Preheat oven to 375°F. Grease a 9-inch round or square baking dish.
05 - Punch down dough and roll out to a 1/2-inch thick rectangle.
06 - Sprinkle evenly with olives, sun-dried tomatoes, feta, parsley, basil, garlic, oregano, and black pepper.
07 - Cut dough into 2-inch squares. Stack squares into small piles, then arrange them standing upright in the baking dish, fitting closely together.
08 - Drizzle with olive oil and sprinkle with sesame seeds if using.
09 - Bake for 30 minutes until golden brown and cooked through.
10 - Cool for 10 minutes before serving warm.