Pour the melted butter into a 9x13 baking pan, rolling it from side to side to make sure all the sides and bottom are covered well with butter.
In a blender, combine the eggs, milk, and salt. Blend for 1 minute on high.
Add in half of the flour, blending for another minute. Add the other half of the flour; blend for another minute.
Pour into the baking pan. Bake for 18 minutes. It will puff up differently and unevenly, depending on each oven.
Arrange all the toppings on a BIG BOARD, along with the plates and forks.
Remove the dish from the oven and serve immediately (while hot and puffed up). It’s okay if the Dutch Baby falls a bit, as the flavor is still the same.
Serve the BIG BOARD toppings next to the hot Dutch Baby. Cut into 6 or 8 pieces. We like to add powdered sugar, either jam or maple syrup, and then a squeeze of fresh lemon.