Pioneer Womans Apple Dumplings

1 large apple {I used a Fuji- any apple will do, tart is better}

1 can Pillsbury Crescent dough

1/2 cup butter

2/3 cups sugar

1/2 tsp cinnamon

1/2 tsp vanilla

3/4 cup or 6 oz. 7-Up or equivalent {half the can}