1Heat oven to 375°F. Spray quiche dish, 9x1 1/2 inches, with cooking spray.
2Mix 1 1/2 cups of the cheese, the whipping cream, pesto, spinach and eggs until well blended; pour into quiche dish.
3Bake 25 to 30 minutes or until knife inserted in center comes out clean. Sprinkle with remaining 1/2 cup cheese. Bake 2 to 3 minutes longer or until cheese is melted.
4While quiche is baking, heat spaghetti sauce in small saucepan until hot; keep warm. To serve, cut quiche into wedges. Serve with spaghetti sauce.