Any combination of fresh or frozen veggies can be used in this versatile recipe. I've included shredded zucchini instead of spinach or added shredded carrots or chopped mushrooms and onions. Exchange the Cheddar cheese for your favorite kind or omit it all together.
I freeze these on a cookie sheet and then put into a freezer bag for grab-and-go breakfasts at work or for the kids in the morning. Just reheat in the microwave for 1 minute 30 seconds.