Step 1: Prepare the Apple Filling: In a large bowl, combine the sliced apples, granulated sugar, flour, cinnamon, and nutmeg. Ensure the apples are evenly coated with the mixture.
Step 2: Create the Crust Mixture: In a separate bowl, mix the yellow cake mix and melted butter until the mixture forms moist crumbs.
Step 3: Assemble the Pie: Press half of the cake mix mixture into the bottom of a 9-inch pie plate.
Step 4: Add the Filling: Pour the apple mixture evenly over the cake mix crust.
Step 5: Top with Remaining Crumbs: Sprinkle the remaining cake mix mixture over the apple filling.
Step 6: Add Water: Drizzle the water evenly over the top of the crumb topping.
Step 7: Bake: Bake in a preheated oven at 350F (175C) for 40 minutes, or until the topping is golden brown and the apples are tender.
Step 8: Cool and Serve: Let the pie cool for at least 15 minutes before serving. This allows the filling to set slightly. Enjoy warm or at room temperature.
Optional tips: To add a nutty flavor, mix cup of chopped pecans or walnuts into the cake mix topping. For a richer flavor, use melted butter with a higher fat content.