Preheat the oven to 350°F (175°C).

Combine sliced apples, granulated sugar, cinnamon, and lemon juice in a mixing bowl.

Spread the apple mixture evenly into a 9x13 inch baking dish.

In a bowl, whisk together flour, brown sugar, salt, and baking powder.

Add softened butter to the flour mixture and use a fork or your fingers to combine until crumbly.

Sprinkle the crumble topping evenly over the apples.

Bake in the preheated oven for 35 minutes, or until the topping is golden brown and the apples are bubbling.

Let the dish cool for 10 minutes before serving. Serve warm, optionally with vanilla ice cream or whipped cream.