1. Preheat oven to 350. Heat skillet over medium heat and spray with olive oil spray.
2. Add garlic and onions and sauté for about 5 minutes, stirring frequently.
3. Add bell pepper and optional Serrano pepper until softened.
4. Next, add tomatoes, lime juice, and oregano and season to taste with salt and pepper. Bring to a boil, then reduce and let simmer for 10 minutes.
5. Transfer into a large, olive oil sprayed oven safe dish.
6. Bake for 12-15 minutes, or until eggs are set.