Preheat oven to 350°F (177ºC) and prepare non-stick muffin tin. Muffin cups or brushing the pan with olive or avocado oil will work too.
In a medium-sized mixing bowl whisk together eggs, veggies and 2/3 of the cheddar.
Pour egg mixture evenly into muffin cups, sprinkle remaining cheddar across the top and season with salt and pepper according to taste.
Bake for 20 minutes. Let cool on a wire cooling rack for at least 5 minutes before removing from pan and serve.