Preheat oven to 350°F. Grease a 13x9 inch baking dish.
Unroll crescent rolls and separate into triangles.
Place a generous spoonful of apple pie filling on wide end of each triangle.
Roll up crescents, starting from wide end, enclosing filling. Pinch seams to seal.
Arrange rolls in prepared baking dish, leaving space between each.
In a mixing bowl, cream together softened butter and brown sugar until smooth and fluffy, about 2-3 minutes.
Drop spoonfuls of butter mixture over each dumpling.
Carefully pour soda around dumplings (not over top), filling spaces between rolls.
Bake for 35-40 minutes until golden brown and bubbly.
Let cool 10-15 minutes before serving.
