Make a batch or two of these to have on hand in the fridge or freezer for easy make-ahead weekday breakfasts.
Preheat oven to 350.
Spread butter with a paper towel to grease baking dish.
Crack eggs into a small bowl. Add milk and seasonings. Whisk well.
Pour egg mixture into baking dish; bake for 15-20 minutes, or until firm in the center. Remove and allow to cool completely before cutting into squares. (Large pockets of air may form bubbles, which will flatten as it cools.) Store in fridge or freezer.