PREPARATION:
- Knead pesto into dough until evenly mixed throughout. Cover dough with plastic wrap; let rest 10 minutes.
- Spray 15x10-inch jelly-roll pan with nonstick cooking spray. Fit dough into prepared pan, gently pressing with fingers. (If dough won't stretch to edges of pan, let rest 5 minutes.) When fully pressed into pan, cover with plastic wrap; let stand in warm place about 30 minutes or until doubled in bulk.
- Meanwhile, heat olive oil in large nonstick skillet over medium-high heat. Add onion; cook, stirring occasionally, about 20 minutes or until tender and well browned. Stir in thyme, salt and pepper.
- Preheat oven to 375°F. Spread onions evenly over dough. Sprinkle with olives. Bake 20 minutes or until bottom is crisp and well browned. To further brown top, place in broiler 1 to 2 minutes.
