¼cup35g tapioca starchor corn starch or potato starch
2tablespoon25g granulated sugar
¼teaspoonsalt
⅓cup75g unsalted butter, cold and diced
For the Filling:
¾cup150g granulated sugar
1teaspoonfresh lemon zest
Pinchof salt
2large eggs
⅓cup80ml fresh lemon juice
¼cup60ml plain full fat yogurt
½teaspoonpure vanilla extract
1teaspooncorn or tapioca starch(or use all-purpose flour)
½cupfresh or frozen raspberries
icing sugar for topping
Instructions
Preheat oven to 350 degrees F. Line an 8×8-inch baking pan with parchment paper leaving a 2-inch overhang along each side.
For the crust, combine almond flour, starch, sugar and salt. Add the cold butter pieces and use your fingers to work the butter into the dry ingredients until the mixture is crumbly and the butter bits are about the size of oat flakes.
Reserve about one-fourth of the crust mixture in a small bowl, and press the rest of it into the base of the prepared pan to form an even layer. Run the back of a spoon over the surface to smooth it out. Bake for 15-17 minutes until lightly golden brown, then set aside.
For the filling, combine sugar, lemon zest, salt and eggs in a medium bowl and whisk until thoroughly combined. Whisk in the lemon juice, yogurt, vanilla and starch or flour.
Pour the filling over the baked crust and scatter raspberries on top. Sprinkle reserved crumb mixture on top. Bake for 18-22 minutes until set and they no longer jiggle. Transfer to a cooling rack and let cool completely, then refrigerate for 1 hour before slicing. Dust with icing sugar before slicing if desired.