Preheat oven to 350 degrees, spray a muffin tin with non-stick cooking spray. Set aside.
In a large mixing, whisk together the eggs, salt, pepper, and kale. Gently mix in 1/2 cup of the Havarti cheese. Fill in the muffin tins with the mixture until 3/4 of the way. Add the other 1/2 cup of shredded cheese on top of the mixture.