Preheat the oven to 425 degrees Fahrenheit. Place the butter in a 9 inch cast iron skillet, or similarly sized oven safe deep pie plate or casserole dish and transfer to the oven as you prepare the batter. I like to place the baking dish or skillet on top of a cookie sheet to catch any excess batter that might overflow the pan as it bakes.
In a large bowl, beat the eggs using a whisk until they are light and frothy. Add the milk and whisk until well combined. Add the sugar, flour, and salt and whisk until the mixture is completely smooth.
Remove the warm baking dish from the oven. Pour the batter into the pan and return it to the oven. Bake for 25-30 minutes or until the edges are puffed and lightly brown. When the pancake is fully baked, a sharp knife inserted into the middle of the pan will come out clean.
Remove the pancake from the oven and serve topped with a sprinkling of brown sugar, fresh sliced strawberries, and a dollop of sour cream. Enjoy!