01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving an overhang on two sides for easy removal.
02 - In a mixing bowl, combine flour, powdered sugar, and salt. Add cold cubed butter and cut in with a pastry cutter or fingertips until mixture resembles coarse crumbs. Press dough evenly into prepared pan.
03 - Bake crust for 15 minutes until lightly golden. Remove from oven and set aside while preparing filling.
04 - In a medium bowl, whisk eggs and sugar until smooth. Add flour, baking powder, lemon zest, and lemon juice; whisk until fully combined. Fold in shredded coconut.
05 - Scatter raspberries evenly over warm crust. Sprinkle with 2 tablespoons sugar.
06 - Pour lemon coconut filling gently over raspberries, spreading evenly. Return pan to oven and bake for 22-25 minutes until filling is set and lightly golden at edges.
07 - Cool completely in pan. Lift out using parchment overhang and cut into 16 bars. Dust with extra powdered sugar if desired.