Preheat your oven to 350°F (175°C) and grease or line an 8-inch baking dish.

In a large bowl, combine lemon curd, milk, sugar, eggs, and melted butter. Mix until smooth.

Gradually sift in the flour, mixing until fully incorporated and runny.

Pour the batter into the prepared dish and bake for 30-35 minutes until golden brown.

Let cool for about 10 minutes before transferring to a serving plate. Dust with powdered sugar and add lemon zest before serving.