Vegetable Frittata

Ingredients (14)

• 10 large eggs
• 1/3 cup whole milk or half-and-half
• Kosher salt and freshly ground black pepper,
• 1 cup shredded mozzarella cheese or Gruyere cheese
• 1 tablespoon olive oil
• 1/2 yellow onion,
• 2 cups sliced cremini mushrooms
• 1 red bell pepper,
• 1 small zucchini,
• 2 cups fresh spinach leaves
• 2 cloves garlic,
• 1/2 cup halved grape tomatoes
• 1/4 cup freshly grated Parmesan cheese
• 2 tablespoons freshly chopped basil