1/3 Cheddar Cheese
Preheat oven to 400°F.
Place butter in a oven safe 6 by 8 dish and put into oven to melt while mixing the rest of the ingredients.
Add milk to the eggs and beat with a whisk, and add flour and salt.
Beat mixture until smooth, and add the cheese.
Pour into hot dish after butter has melted and bake for 20 minutes.