350°F (175°C). Grease a deep-dish baking pan or a 9×13 inch baking dish.
Prepare the Apple Filling:
In a large bowl, combine the sliced apples, granulated sugar, brown sugar, flour, cinnamon, nutmeg, and lemon juice. Toss to coat the apples evenly. Pour the mixture into the prepared baking dish and spread it out evenly.
Prepare the Crisp Topping:
In a separate bowl, combine the flour, oats, brown sugar, granulated sugar, cinnamon, nutmeg, and salt. Stir in the melted butter until the mixture is crumbly and well combined.
