Spray the slow cooker with non-stick spray. Place cooked sausage down in an even layer. Then sprinkle over 1 cup of cheese, green chiles and green onions.
In a large bowl whisk together the eggs, sour cream, salt and pepper until smooth.
Pour this mixture over the ingredients in the slow cooker.
Cover and cook on HIGH for 2 hours and 15 minutes. Do not open the lid during the cooking time or you will risk the eggs not setting up correctly.
After the cooking time is done add the remaining 1.5 cups of cheese and cover for about 5 minutes, or until the cheese is melted.
Sprinkle with additional green onion if desired and enjoy!
Notes
To make this dish vegetarian, omit the sausage. You can add other mix ins such as black beans, or soy crumbles if desired.
You can use milk, half and half or heavy cream instead of sour cream,. If you want to go a healthy direction, use can use cottage cheese!
Bacon can be used instead of the sausage, though you will have to cook it. If you don't cook the bacon before adding it to the slow cooker, it only adds greasiness and no flavor. Browning bacon ahead of time cooks off the fat and adds a browned smokey bacon flavor to the dish.
Don't toss the leftovers, this egg dish reheats very well in the microwave.