Prep Time15 minutes mins
Cook Time1 hour hr 15 minutes mins
Resting time30 minutes mins
Total Time1 hour hr 30 minutes mins
Course: Dessert
Cuisine: British
Keyword: apple, blackberry, butter, caster sugar, egg, oats
Note 1: try to avoid pre-heating the oven while you are rubbing the fat, flour and sugar mix. It's good to make sure your hands, bowl and the butter are all as cold as possible during this process.