Preheat oven to 350°F. Lightly grease a 9x13 inch baking dish.

Unroll the crescent dough and separate into triangles. Take 1 cup of the sliced strawberries and place a spoonful at the wide end of each triangle. Roll up the dough around the strawberries and pinch to seal, forming little strawberry hand pies.

Arrange the dumplings evenly in the prepared baking dish.

In a microwave-safe bowl, combine the butter and remaining 1/2 cup sliced strawberries. Microwave for 1 minute until butter is melted.

Use a fork to mash the strawberries into a jam-like consistency. Stir in the brown sugar, vanilla, cinnamon and lemon juice until well combined.

Pour the strawberry sauce evenly over the top of the dumplings in the baking dish.

Carefully pour the 7-Up or Sprite around the edges of the dish, avoiding pouring directly over the dumplings.

Bake for 33-36 minutes until the dumplings are golden brown and the sauce is bubbling.

Allow to cool for 5 minutes. Serve the strawberry dumplings warm, with vanilla ice cream or whipped cream if desired.