Peel and core apples, slice into 4 slices per apple, roll each apple slice in 1 cresent roll and place in pan 9X13X2inches.
Mix margarine, sugar and cinnamon together in sauce pan, and heat to melt, add the can of mountain dew.
Pour mixture over crecsent rolls . Bake at 350* for 45 minutes. Let stand for 30 minutes before serving. Yields 16 apple dumplings.