Make the sweet shortcrust pastry by rubbing 200 g plain flour, 100 g cold butter, 1 pinch salt, and 50 g icing sugar between your fingertips until it resembles breadcrumbs. Add 1 egg yolk and 1 ½ tablespoon water**, and bring together into a stiff dough.
Wrap the galette pastry in reusable beeswax wrappers (or clingfilm) and chill in the fridge for a minimum of 30 minutes to one hour. Overnight is also fine.
Preheat your oven to 180℃ or 356℉.
Make the cheesecake base by whisking 165-200 g cream cheese****, 2 tablespoons icing sugar, and 1 egg yolk.
In a large bowl, gently mix 250 - 300 g blueberries*** with 2 tablespoons granulated sugar.
Assemble the galette by rolling the pastry to a 30cm diameter circle. Leaving room at the sides (to fold the pastry over later), spoon on your cheesecake filling, then top with the sugar-coated blueberries. Fold over the sides of the galette.
Mix your egg wash by whisking 1 egg yolk until well blended. Brush this over your crust. Next, add 8 - 10 almonds (slivered), and a sprinkle of sugar (there will be some left from the blueberries). Any excess sugar you're left with, sprinkle over the berries.
Bake the blueberry cheesecake galette for around 25 minutes or until the crust is golden. Cool and then garnish.
Optionally, add 1 lemon, zested before serving.
Notes
* Please try to buy icing sugar that doesn't have additional cornflour/cornstarch, as this will affect the texture and taste of the galette. ** How much water you need to knead the dough completely depends on the brand and variety of flour, so start with less and work your way up to more. *** I haven't added a strict weight measurement for blueberries to account for reader taste. If you want more cheesecake flavor, use slightly less blueberries. If you'd like more fruit, use slightly more. I used 250g. **** Most cream cheese packets are in packs of 165g, but if you have a 200g packet, feel free to add it all. It won't affect the recipe. Just make sure to buy "dry" cream cheese — I like Philadephia.