Preheat your oven to 350°F (175°C).
Lightly grease a 9x13-inch baking dish with cooking spray or butter.
In a large mixing bowl, crack the 12 eggs and whisk them until well combined and slightly frothy.
Add the cottage cheese, cheddar cheese, green chiles, green onions, black olives, Spike seasoning, and salt and pepper to the bowl. Mix gently until combined.
Pour the mixture into the prepared baking dish and spread evenly.
Bake for 45-55 minutes, or until the eggs are set and the top is lightly golden.
Let the casserole cool for about 10 minutes, garnish with additional green onions if desired, and cut into squares to serve.
