01 -
Preheat your oven to 350°F (180°C) with conventional heating (not fan). Line the bottom of a 10-inch (26cm) springform pan with parchment paper and lightly grease the sides. Thoroughly wash the lemons (since you'll be using the zest), then finely grate the zest and squeeze the juice, keeping them separate.
02 -
In a large bowl, beat the butter until creamy using an electric mixer. Add the sugar, salt, and lemon zest, and continue beating until light and fluffy, about 3-4 minutes. Add the eggs one at a time, beating well after each addition. Sift together the flour and baking powder, then fold into the butter mixture along with the ground almonds, lemon juice, and limoncello until you have a smooth batter.
03 -
Pour the batter into the prepared springform pan, smoothing the top with a spatula. Bake in the middle rack of your oven for about 35 minutes, until a wooden skewer inserted into the center comes out clean. The cake should be golden on top and slightly pulling away from the sides of the pan.
04 -
Allow the cake to cool in the pan for about 10 minutes, then carefully remove the springform ring and transfer to a wire rack to cool completely. For the glaze, whisk together the powdered sugar and lemon juice until smooth and glossy. Once the cake is completely cool, pour the glaze over the top, allowing it to drip down the sides. Sprinkle with additional lemon zest for decoration, if desired.