• Preheat oven to 375ºF. Spray a 12" cast iron pan or a 9x13 baking dish with cooking spray.

Make the Crumble Filling:

• In a small saucepan, melt the butter over medium low heat until its bubbly and a dark brown color.
• Pour the butter into a medium sized bowl and mix with the vanilla extract, ½ cup brown sugar, flour, oats, and allspice. Set aside.

Prepare the apples:

• Slice each apple in half and remove the stems. Using a spoon, scoop out the core of each apple.
• Pour the hot water into the bottom of your 9x13 pan and place the apples inside, with the cut side up.
• Sprinkle the remaining 2 tablespoons brown sugar and cinnamon all across the apples. Then, stuff each apple half with the filling mixture.
• Cover with foil and bake for 20 minutes. Remove the foil and bake for another 25-30 minutes or until the apples are soft.
• Serve warm with vanilla ice cream and caramel sauce.