Preheat oven to 425 degrees F. Butter two baking dishes (I used a cast iron skillet and large round polish pottery dish). Whisk together the milk, eggs, melted butter and ground cardamom in a large bowl. Add the flour and baking powder and continue to whisk for 1 minute.
Pour the batter into your dishes and bake until the Pannekoeken is puffy and golden. Mine took 25 minutes, but I would check at 20.