Preheat oven to 400 degrees.

Pour EVOO into oven-safe cast iron skillet and ensure sides get a coating.

On the stovetop, heat for 2 minutes on medium high. Meanwhile, whisk together the eggs and milk. Add in vegetables and pour all into skillet.

Heat for approx. 5 minutes united the sides start to cook.

Transfer to oven and cook for 15-20 minutes until the liquid has set.

You can also put it under the broiler for a couple minutes at the end for a nice brown crust.