Add eggs, flour, milk, brown sugar, cardamom, vanilla extract, salt and lemon zest together into a blender and blend until smooth.
Place butter in a cast iron skillet (10-12") and place in the oven until butter has melted. Pour batter into each pan, return to oven and bake for 20 minutes, until the pancakes are puffed and golden brown. Lower oven temperature to 300 degrees and bake for an additional five minutes.
Remove cast iron pan from oven, cut into wedges and top with a dusting of powdered sugar, a generous spoonful of lemon curd and fresh blackberries.
Recipe by the modern barista at https://themodernbarista.com/index.php/2017/03/26/kenya-kangunu-lemon-mkate-wa-maji/