Whisk the butter and sugar until creamy.
Add eggs, lemon juice, and zest and whisk.
Add flour and salt, mix until smooth.
Grease a 9 * 13 baking dish, lay out the dough and distribute. Bake for 30-35 minutes at 350 F until golden brown.
For the glaze, combine the powdered sugar with lemon zest and juice (add a little more juice for a thinner glaze). Cover the hot cake with glaze. Let it cool completely cool, cut into pieces, and serve.