7 cups granny smith apples
½ cup brown sugar
1 ½ teaspoons cinnamon
2 Tablespoon cornstarch
½ cup butter
¾ cup brown sugar
1 cup all-purpose flour
1 teaspoon baking powder
vanilla ice cream
Prepare the topping by mixing the melted butter, brown sugar, flour and baking powder in a mixing bowl. Place in the refrigerator while you prepare the filling.