Dissolve yeast and sugar in warm water in a small bowl, and let stand 5 minutes. Stir in cool water, milk, and olive oil. Lightly spoon flour into dry measuring cups; level with a knife. Place flour and 1/4 teaspoon salt in a food processor, and pulse 2 times or until blended. With processor on, slowly add yeast mixture through food chute, and process until dough forms a ball. Process dough an additional minute. Turn dough out onto a lightly floured surface, and knead lightly 4 to 5 times.
Place dough in a large bowl coated with cooking spray, turning to coat top. Cover dough, and let rise in a warm place (85°), free from drafts, 1 hour or until doubled in bulk.
Preheat oven to 450°.
Punch dough down; cover and let rest 15 minutes. Roll dough into a 14-inch circle on a lightly floured surface. Place dough on a 15-inch pizza pan or baking sheet sprinkled with cornmeal.
Combine Caramelized Onions, 1/4 teaspoon salt, pepper, and garlic. Spread onion mixture over dough. Sprinkle feta and olives over onion mixture. Bake at 450° for 18 minutes or until browned.