These luscious bars are full of flavour from the bright and zingy lemon curd filling to the buttery and crisp shortbread crust. A final dusting of icing sugar gives these an old-school bake sale feel.
The quantities provided above are averages only.
Produced in a facility that processes milk, sesame, eggs, fish, shellfish, crustaceans, mustard, tree nuts, peanuts, wheat, soybean and sulphites.
3 unit(s)
Lemon
¼ cup
Icing Sugar
1 cup
White Sugar
1.5 cup
All-Purpose Flour
(Contains Wheat)
3 unit(s)
Egg
(Contains Egg)
3 tbsp
Sour Cream
(Contains Milk)
8 tbsp
Unsalted Butter*
(Contains Milk)
¼ tsp
Salt*
Before starting, preheat the oven to 350ºF.Remove 8 tbsp butter from the fridge and cut into 1/2-inch pieces. Set aside in a warm place to soften. Line an 8x8 metal baking dish with aluminum foil, pressing to adhere to all sides.Add flour, 4 tbsp white sugar and 1/4 tsp salt to a medium bowl, then whisk to combine. Add softened butter, then, using your fingers, rub butter into the flour mixture to form coarse crumbs. (NOTE: The mixture should be dry but hold together when squeezed in your palm.)Transfer shortbread mixture to the prepared pan and press into an even layer along the base and about 1/2-inch up the sides of the pan using the back of a spoon or straight-sided measuring cup.
Bake crust in the middle of the oven for 18-22 min until lightly golden-brown.Meanwhile, zest, then juice lemons.Roughly chop lemon zest.Add 1 tbsp lemon zest, remaining white sugar and 2 tbsp icing sugar to a large bowl, then rub together using your fingers until fragrant, 1 min.Whisk in eggs, one at a time, until smooth, then whisk in sour cream and 1/3 cup lemon juice.Remove crust from the oven and transfer to a wire rack to cool slightly, 5 min. Reduce oven temperature to 325ºF.
Pour lemon curd filling over the partially-baked shortbread crust. Carefully transfer to the middle of the oven and bake until curd is set around the edges with a slight wobble in the centre when the pan is gently shaken, 22-25 min.Transfer pan to a wire rack and let cool, 30 min. Transfer pan to the fridge to cool until completely set, 1-2 hrs.
Remove lemon bars from the pan by gently tugging on the corners of the aluminum foil.Cut into 16 pieces using a sharp knife. (NOTE: For clean slices, wipe down the knife in between in each cut.)Sift remaining icing sugar over top of lemon bars before serving.