A Bakewell Tart usually has raspberry or strawberry jam but blueberries go so well with the almondy sponge. Substitute the blueberries with 200 grams of raspberries if you prefer. Frozen fruit is ideal. You'll need some baking beans to provide weight in your tart case as you pre-bake it. You can use any dried pulses and keep them for another time. Chilling and pre-baking the tart case is essential (baking blind).