Easy to double or triple.
**I have also used 1/2 cup chopped green and red pepper for color. Have added 1/2 cup sauted onions or scallions. Have also added chopped broccoli (blanch before adding). Have tried other cheeses, but cheddar seems to work best. Experiment with things that you like.
***Have also baked this in a real souffle dish or a round casserole dish and impressed guests. Just adjust your baking time and bake until the center is puffed up and set. Time it to come out of the oven when you want your guests to be served and act like they have to eat before the "souffle" falls. It's very impressive (and I've never had one fall).
