6 large apples, cored and diced
240g diced rhubarb
200g white sugar
30g all-purpose flour
5g ground cinnamon
150g quick cooking oats
200g brown sugar
225g chilled butter, cut into pieces
30g white sugar, or to taste
Step 1
Begin by preheating the oven to 175°C (350°F) and greasing a 23x33cm (9x13-inch) baking dish.
Step 2
In a large bowl, mix together the diced apples, rhubarb, 200g white sugar, 30g flour, and 5g cinnamon until well combined. Spread this fruit mixture evenly into the bottom of the prepared baking dish.
Step 3
Next, in a separate bowl, combine the quick cooking oats, remaining 150g flour, and brown sugar. Cut in the chilled butter until the mixture is crumbly. Spread this crumbly mixture evenly over the fruit layer.
Step 4
In a small bowl, mix 30g white sugar with the remaining 1/2 teaspoon of cinnamon and sprinkle this mixture over the oat topping.
Step 5
Bake in the preheated oven for about 45 minutes, or until the fruit is bubbling and thick, and the topping is golden brown. Allow the crisp to cool for 10 to 15 minutes before serving.