Scalloped Potatoes without pimento salad

5 large potatoes , peeled and thinly sliced 3/4 cup onion , chopped 3 tablespoons butter or 3 tablespoons margarine 1/4 cup flour 1 3/4 cups chicken broth 2[...]

5 large yukon gold potatoes , peeled and sliced thinly 1 small onion , finely chopped 1 garlic clove , finely minced 3 tablespoons butter 3 tablespoons flour[...]