1Heat oven to 325°F. Place bacon slices on sheet of heavy-duty foil. Pour syrup over bacon. Bring up 2 sides of foil so edges meet. Seal edges, making tight 1/2-inch fold; fold again, allowing space for heat circulation and expansion. Fold other sides to seal.
2In 13x9-inch (3-quart) glass baking dish, melt butter in oven. Tilt dish so butter coats bottom. In large bowl, beat eggs, sour cream, milk and salt with wire whisk until blended. Stir in onions. Pour into baking dish.
3Bake omelet and bacon packet about 35 minutes or until eggs are set but moist and bacon is hot. Arrange bacon on omelet. Sprinkle with parsley.