Begin by preheating your oven to 350°F
Next, in a large bowl, combine all the ingredients for the apple crisp filling, ensuring that the apples are thoroughly coated.
Now, transfer these beautifully dressed apples into an 11" cast iron skillet or any oven-safe baking pan that comfortably accommodates the apples, ensuring they cover the pan's surface.
Slide the apples into the preheated oven and bake for 10 minutes.
While the apples work their magic, let's whip up the topping. In another large bowl, whisk together all the ingredients, except for the butter. Then, add in the butter cubes, and roll up your sleeves! Use your fingertips to blend and meld the butter into the dry ingredients. This might take a little time, so keep at it until the butter is seamlessly incorporated, and the crisp mixture can hold its shape when you squeeze it.
When the initial 10 minutes are up, carefully retrieve the apples from the oven and generously crown them with the prepared crisp mixture. Spread it evenly to create a cozy blanket for those apple slices.
Now, it's time to return the crisp to the oven, baking it for approximately 35-40minutes or until you witness those delightful bubbling edges and a beautifully golden-brown crisp. If the top starts browning too quickly, simply cover it with a loose sheet of foil and continue baking.
After this delectable creation emerges from the oven, show some patience and let it cool for around 15 minutes. Then, feel free to dive in and enjoy! It's a delightful reward for your taste buds.