Preheat the oven to 170ºC
Peel and chop the apples and pears. Place them in a medium bowl toss with the 30g of plain flour and cinnamon. Set aside.
Heat an ovenproof skillet over medium heat and melt the butter. Add the 130g of brown sugar to the butter and continue to cooker over the heat until the sugar has melted and turned into a caramel sauce.
Place the apples and pears into the pan and toss to coat with the caramel sauce. Set aside for a few minutes while you make the crumble topping.
In a food processor place all the ingredients for the crumble topping and use the pulse function to create a coarse and chunky crumble topping. *See notes
Top the apple and pear mix with the crumble topping. *See notes
Bake in the preheated oven until the crumble is golden and the caramel sauce is starting to bubble up from around the edges, about 30 minutes.
Serve with vanilla ice cream or custard.
This crumble makes enough to serve 6 people generously. Also makes a great weekend breakfast served cold.