2. Step
Melt butter in a medium cast-iron skillet over medium heat. Remove from heat. Transfer 2 tablespoons of the melted butter to a blender. Add eggs, milk and vanilla; blend until very smooth, about 30 seconds. Add flour, 1 tablespoon granulated sugar, baking powder, 1/4 teaspoon nutmeg and salt; pulse until very smooth, scraping down the sides as necessary.