Add your onions and sauté for a minute.
Take off the heat and add your spinach. Stir and set aside to cool.
Get two skillets going on the stove. One small omelet pan and a larger skillet. Spray them both with cooking spray and heat to medium.
Add 1 well beaten egg to the smaller pan and swirl to coat the whole pan. As the egg starts to set, swirl again to get the egg evenly around the pan.
When almost cooked, careful flip the egg over into the larger pan and sprinkle the cheese over the top evenly.
Repeat the egg process with your remaining 3 eggs so you have 4 burritos total.
Transfer the burritos that are on the cookie sheet and place into the freezer for 2 hours or until the burritos are frozen.
The nutrition for one burrito is:
267 cals / 22.4 g fat / 2.8 g carbs / 0.5 g fiber / 13.7 g protein = 2.3 g net carbs