Whisk together eggs in a large mixing bowl until light yellow and fluffy. Pour in the onion, garlic, salt, pepper, tomatoes, and greens. Mix well.
Spray a 12-cup muffin tin with avocado oil or nonstick spray. Pour ⅓ of mix into each cup, filling to the top. Bake on 350 degrees F for 25 minutes.
Remove and let cool for 5-10 minutes. Use a knife to release eggs from their cups around the edges.
Top with avocado chunks, shredded cheese, and leftover tomatoes for garnish, if desired.
Notes
Nutritional facts:Please keep in mind that the nutritional information is calculated using a nutrition facts calculator. It is a rough estimate and can vary greatly based on products used.