Frittata with vegetables

Ingredients:

• 4 large eggs
• 0.5 cups heavy cream
• 1 cup grated Swiss cheese
• 1 cup grape tomatoes, halved lengthwise
• 2 tablespoons salted butter
• 1 small onion, finely chopped
• 4 cups small spinach

Preparation:

1. Preheat the oven to broil. In a medium bowl, whisk together the eggs, heavy cream, 1/2 teaspoon salt, and 1/4 teaspoon black pepper until smooth. Add the cheese and tomatoes and set aside.
2. In a medium oven-safe skillet (I use a cast iron skillet), melt the butter over medium heat. Add the onion and sauté until soft, about 5 minutes. Add the spinach and cook until wilted, about 2 minutes. Pour the egg mixture over the spinach and cook until almost set, 2-4 minutes.
3. Transfer the pan to the oven and cook until golden brown on top, about 5 minutes. Remove the frittata from the oven and transfer to a serving platter.