Preheat oven to 425°F. Place an oven-safe baking dish or cast-iron skillet inside while the oven heats.
Once hot, add 5–6 tablespoons of butter to the dish and return it to the oven until melted.
In a blender, combine eggs, milk, flour, salt, and nutmeg. Blend until smooth.
Carefully remove the hot dish from the oven and pour the batter directly over the melted butter.
Return to the oven and bake for 20–25 minutes, until puffed and golden brown.
Serve hot- great with lemon juice and powdered sugar, fruit, or maple syrup.
