Spinach Frittata

Directions

1. 1
   Preheat the oven to broil.
2. 2
   In a medium bowl, whisk together the eggs, milk, salt and pepper until smooth. Fold in the cheese and tomatoes and set aside.
3. 3
   In a 9-inch, oven-safe nonstick frying pan over medium heat, melt the butter.
4. 4
   Add the onion and saute until softened, about 5 minutes.
5. 5
   Add the spinach and cook until wilted, about 2 minutes.
6. 6
   Pour the egg mixture over the spinach, and cook until almost set, 2 to 4 minutes.
7. 7
   Transfer the pan to the oven and broil until golden brown on top, 5 to 7 minutes.
8. 8
   Remove from the oven and turn out onto a serving plate.