Unfold puff pastry; press into a greased 9-in. fluted tart pan with removable bottom. In a large skillet, cook bacon over medium heat until crisp. Spoon bacon into crust and sprinkle with blue cheese. In a large bowl, whisk the eggs, cream, Parmesan cheese, salt, nutmeg and pepper; pour over top.
Bake at 350° for 30-35 minutes or until a knife inserted near the center comes out clean. Meanwhile, in a large skillet, saute onion in oil until tender. Add pears and brown sugar; cook 4 minutes longer. Serve with quiche. Yield: 8 servings.