Preheat the oven to 425F.
Blend together the eggs, milk, flour, salt, and pepper. I used a Nutribullet, but you can also use a regular or immersion blender. Once you're done blending, add half of the cheese to this mixture.
Once the oven is hot, place the 3 pieces of butter in the skillet and place into the oven for 1 minute to let the butter melt.
Carefully pull the pan out of the oven and swirl the melted butter around the pan.
Pour the egg mixtures into the pan. Top with the remaining cheese and put back into the oven on the bottom rack.
Bake for 20 minutes. The egg mixture will puff up the sides of the pan.
Slice, and top with microgreens and additional salt and pepper to taste.