Preheat the Oven:
Preheat your oven to 375°F (190°C). Lightly grease a 6-cup muffin tin with non-stick spray or olive oil.
Whisk the Eggs:
In a large mixing bowl, whisk together eggs, milk, salt, and pepper until smooth and slightly frothy.
Add Fillings:
Stir in your choice of veggies, cheese, and cooked meat (if using). This is your chance to get creative with your egg-based breakfast!
Pour into Muffin Tin:
Evenly pour the mixture into the prepared muffin cups, filling each about ¾ full.
Bake:
Bake for 18–20 minutes or until the muffins puff up and turn lightly golden on top.
Cool & Serve:
Let cool slightly before removing from the tin. Enjoy warm, or refrigerate for later use.