Put butter in a 9×13 inch baking dish or 9 inch cast iron skillet and set in 425F oven to melt. While butter is melting put the eggs in a blender and blend on high for 1 minute. Gradually add milk while blending.Then slowly add flour and continue to blend for 30 sec.
Remove baking dish/skillet from oven once butter is melted and pour the batter into the buttery hot skillet.
Bake in oven for appx 20-25 min. or until puffy and nicely browned.
Remove, cut into wedges and sprinkle with powdered sugar.
Additional Optional Toppings: Maple syrup, jam, baked apples with cinnamon and sugar, berries, whipping cream