Crescent Apple Dumplings

Bahan-bahan (8 porsi)

• 2 large Granny Smith apples
• Two 8-ounce tubes refrigerated crescent dough
• ¾ cup (1½ sticks) butter
• 1 cup packed light brown sugar
• 1½ teaspoons ground cinnamon
• 1 teaspoon vanilla extract
• pinch of salt
• 7.5 ounces 7-Up or Sprite
• vanilla ice cream, (optional)