Microwave frozen spinach, according to instructions on package, until thawed. Drain/squeeze the spinach until all excess liquid is removed.
Grease a 1 ½-2 qt. baking dish with butter. In a bowl, combine all ingredients until evenly-mixed. Pour into greased baking dish.
Bake for 35 minutes or until lightly browned and bubbly. Serve and enjoy!
Notes
Make sure that your spinach is well-drained; if not, the souffle will have unwanted liquid content. Allow cream cheese to reach room temperature prior to mixing. It makes mixing so much easier!Season with additional salt and pepper according to your taste preferences.