Let’s dive into the process of crafting this delightful dessert:

1. Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish lightly with butter.
2. In a large mixing bowl, toss the sliced apples with lemon juice, granulated sugar, cinnamon, and nutmeg. Ensure every apple slice is well coated. I find using my hands gives the best result and adds a personal touch.
3. Spread the apple mixture evenly in the prepared baking dish. Take a moment to inhale the fragrant spices—this is where memories are made.
4. In another bowl, combine the flour, oats, brown sugar, and salt. Pour in the melted butter and stir until the mixture becomes crumbly. This step was always my favorite as a child, feeling the texture change beneath my fingertips.
5. Sprinkle the crumble topping over the apples, ensuring an even distribution. This is the part where my kids love to help, creating their own patterns with the topping.
6. Bake in the preheated oven for 45-50 minutes or until the topping is golden brown and the apples are tender when pierced with a fork.
7. Let the apple crisp cool for about 10 minutes before serving. This allows the flavors to meld beautifully together.