Oven Pancakes

This is my sister Marianne's recipe. It is delicious, easy but looks impressive for company.

Oven Pancakes
4 eggs
1 cup milk
1 cup flour
1/2 teaspoon salt
pinch nutmeg
2 Tablespoons butter
Preheat oven to 450 degrees. Put large oblong glass baking dish in oven to preheat with the 2 Tablespoon butter in it. Beat together all of the other ingredients. Take the hot baking dish out of the oven and swirl the butter around so the dish is well greased. Pour the batter into the dish. Bake until puffy, browned and set (about 15-20 minutes). Sprinkle with cinnamon sugar or powdered sugar. Serve immediately.