In a large bowl combine 1-3/4 cups flour, Undissolved yeast, oregano, and salt. Stir in water and 2 tablespoons olive oil into dry ingredients. Stir in egg and enough flour to make a stiff batter. Cover let rest 10 minutes. Meanwhile in a large skillet add 1/4 cup olive oil and heat till hot add onions cook 3 to 4 minutesuntil soft not browned. Set aside to cool slightly. With slightly oiled hands, spread batter into oiled 13 X 9 X 2 inch baking pan. Make small indentations in surface of batter with finger or end of wooden spoon. Spread reserved onion mixture evenly over batter. Sprinkle with coarse salt and rosemary if desired. Cover loosely with plastic wrap let rise in warm place till doubled in size about 30 minutes bake at 400 for 25 minutes till done. Serve warm or cold