Step 1

Preheat the oven to 375°F. Spray a 11x7 inch baking pan with nonstick spray.

Step 2

In a large bowl, toss the apples with the lemon juice, Then mix in ¼ cup sugar, whiskey, cinnamon, cardamom and salt. Scoop the apples into the prepared dish and scrape the juices on top.

Step 3

In a separate bowl, whisk together the flour, oatmeal and remaining ½ cup sugar. Add the butter, and use your fingers or a pastry blender to work the butter into the mixture until it resembles coarse crumbs. Stir in the walnut pieces.

Step 4

Sprinkle the crumb mixture evenly over the top. Bake until golden brown and bubbly, 35 to 40 minutes.

Step 5

Serve warm with freshly whipping cream and caramel sauce (optional).