Preheat oven to 425º.

Put the butter in a 12 inch cast iron (or other oven safe) skillet and place pan in the oven.

While the butter is melting, mix together eggs, milk, flour, green onions, 3 slices of crumbled bacon, salt and pepper in a large bowl. When the butter is melted, remove the pan from the oven, and pour in the batter.

Bake the oven pancake for 15-20 minutes or until the pancake is puffy and golden brown. Top with cheese and remaining crumbled bacon before serving.