Scatter the crumble mixture over the top and cook for 45 to 50 minutes until browned on top and purple juice start to peep through. Serve hot. Adjust Servings For the filling 25 g butter 350 g apples … Rating: 4.57 stars 7 Ratings. Preheat the oven to 200˚C, gas mark 6. This crumble delivers – this Blackberry, Pear and Apple crumble makes for an ultra decadent dessert for any occasion! Print Recipe Ingredients. Easy Apple, Pear, and Blackberry Crumble Easy Apple, Pear, and Blackberry Crumble. Toss the apples and pears with the sugar, lemon juice and a pinch of salt. 2 bramley apples, peeled, cored and cut into 3cm chunks 2 conference pears, peeled, cored and cut into 2cm chunks 1. 0 /9 Ingredients.