Peel, core and slice the apples into even pieces so they cook gently and become soft, juicy and sweet inside.

Place apple slices in a bowl, add white sugar, cinnamon and lemon juice, then mix well so every piece gets coated evenly.

Add flour, oats, brown sugar and salt into another bowl, stirring lightly to combine the dry ingredients before adding butter pieces.

Use fingertips to rub cold butter into the flour mix until it looks like rough crumbs and small buttery pebbles form evenly.

Spread the sweet apple mixture into your baking dish, creating an even layer so the crumble topping sits nicely over it.

Scatter the crumb mixture over the apples, covering fully but not pressing down too hard, so it bakes crisp and golden.

Place dish in preheated oven at 180°C, bake until the top turns golden brown and apples bubble gently around the edges.

Let the apple crumble cool slightly after baking, so the filling settles and the flavors blend beautifully together before serving warm.