01 - Combine flour, yeast, sugar, and salt in a large mixing bowl. Whisk thoroughly to distribute yeast evenly.
02 - Pour warm water and olive oil into dry ingredients. Mix with a wooden spoon until shaggy dough forms and no dry flour remains visible.
03 - Turn dough onto lightly floured surface. Knead by pushing forward with heel of hand, folding back, and rotating for 8-10 minutes until smooth, elastic, and springs back when pressed.
04 - Place dough in a greased bowl, turning once to coat all surfaces. Cover with plastic wrap or damp towel. Let rise in warm, draft-free area for 1 hour until doubled in size.
05 - While dough rises, combine sun-dried tomatoes, olives, feta, basil, parsley, garlic, melted butter, oregano, and black pepper in medium bowl. Mix until evenly distributed.
06 - Punch down risen dough to release air. Roll on floured surface into 12x16 inch rectangle, maintaining even thickness throughout.
07 - Spread Mediterranean filling evenly over dough surface, leaving 1/2 inch border around edges. Press filling gently to adhere.
08 - Cut dough vertically into 4 equal strips. Stack strips directly on top of each other. Cut stack crosswise into 6 equal pieces to create 12 layered portions.
09 - Place stacked pieces upright in greased 9x5 inch loaf pan, arranging them snugly so they support each other during rising.
10 - Cover pan loosely with greased plastic wrap. Let rise 30 minutes until puffy and dough reaches pan edges. Preheat oven to 350°F during final 10 minutes of rise.
11 - Brush top with olive oil and sprinkle with sesame seeds if using. Bake 30-35 minutes until deep golden brown and internal temperature reaches 190°F. Tent with foil if top browns too quickly.
12 - Let bread cool in pan for 10 minutes to set structure. Run knife around edges and transfer to wire rack. Serve warm or at room temperature for best texture.