Skillet Spring Greens Asparagus Frittata

Ingredients:

• 2 tablespoons olive oil
• 1 bunch thin asparagus (about 2 cups)
• 8 large eggs
• 1 cup spring salad greens
• 2 tablespoons milk
• 2 tablespoons freshly grated pecorino, optional
• Kosher salt and freshly ground black pepper