Preheat the oven to 425 degrees.In a mixing bowl, combine the flour, milk, beaten eggs, and grated nutmeg. Beat lightly with an immersion blender or blender, leaving the batter slightly lumpy.Melt the butter in an OVENPROOF large skillet over medium heat.Once the butter has melted, pour the batter into the skillet and bake in the oven for 15-20 minutes, or until the pancake is golden brown.Sprinkle the top with powdered sugar and raspberries.Top with fresh lemon juice, to taste, or maple syrup if you prefer. Slice and serve immediately. Enjoy.