Grease a 9 x 13 baking pan and preheat oven to 350 degrees.
Peel, core, and slice apples. Cut each apple into 8 slices.
Roll each apple slice in a crescent roll and place in greased baking dish.
Melt butter, brown sugar, vanilla, and cinnamon in a pot. When thickened, remove from heat and pour over dumplings.
Pour soda in the middle of dumplings, or around the edges. Do not pour soda directly on top of dumplings.
Bake 40-45 minutes or until a golden brown color on top.
Serve warm with a scoop of vanilla ice cream on top!