Preheat oven to 375 degrees.

Combine first four ingredients in a plastic bag. Pour a small amount of oil in a skillet and heat. Dredge pork chops in flour mixture; brown in hot oil 5 minutes on each side. Top each chop with onion slice. Remove pork chops and onions to a 9×13 inch baking dish.

Add 2 to 3 Tablespoons of remaining flour mixture to pan drippings and cook for 2 to 3 minutes, stirring to blend well. Add beef broth and stir until smooth and thickened. Stir in sour cream and pour over pork chops.

Bake covered 1 to 1/2 hours until chops are done.

Serve with buttered noodles.