Add the egg/ flour base to the spinach off to the side. Add the remaining swiss cheese and you'll have a gooey mess like this.
Get our your mixer and wire whip attachment to whisk your egg whites. Put the egg whites in a large bowl with a dash of salt and beat on high until you have white stiff foam.
Pour your mixture into the prepared souffle dish. Put in the oven and turn it down to 375 degrees and bake for 25 minutes. Serve Immediately!