Preheat oven to 375°F (190°C). Grease a 9″ square baking dish, set aside.
In a medium bowl, combine sugar, flour, and granola. Add melted butter, stir until well incorporated. Everything should be wet, but crumbly.
Peel (if you want – I don’t usually), core, and chop the apples. Toss apple chunks with the apple brandy.
Separately, combine brown sugar, cinnamon, and nuts or cranberries – if using. Add to the bowl of apples, toss until apples are evenly coated.
Spread apple mixture evenly over the bottom of the baking dish.
Top with an even layer of the granola mixture, patting down lightly.
Bake for 35-45 minutes, or until topping is lightly browned, and apples are tender.
Serve with ice cream or whipped cream.