01 -
Peel, core, and dice the seasonal apples. Place them evenly onto a lined baking sheet.
02 -
In a mixing bowl, combine flour, oats, granulated sugar, and ground cinnamon. Add cold, diced butter and crumble together using your hands or a pastry cutter until the mixture resembles coarse crumbs.
03 -
Sprinkle the crumble mixture evenly over the diced apples on the baking sheet. Bake in a preheated oven at 180°C (350°F) for 30-35 minutes, or until the top is golden and crispy.
04 -
Allow the apple crumble bars to cool for 10-15 minutes before cutting into squares. Serve warm or at room temperature.