Spinach and Tomato Skillet Frittata | GreenPan

Ingredients

• 8 large eggs
• 1/2 cup half and half or whole milk
• Salt to taste
• 2 tablespoons olive oil
• 1/2 yellow onion or 2 shallots, diced
• 2 cloves garlic, minced
• 1 cup grape or cherry tomatoes, halved
• 3 cups baby spinach, packed
• 3/4 cup freshly grated Swiss cheese, more or less to taste
• Freshly ground black pepper to taste