Sweet Onion and Fennel Frittata8 eggs1/4 cup milk1/2 cup grated Parmesan or Pecorino cheese4 tablespoons minced fresh fennel greens, divided1/4 teaspoon salt1/4 teaspoon pepperPinch red pepper flakes2 tablespoons extra virgin olive oil1 medium sweet onion, thinly sliced1 small bulb fennel, thinly sliced Fresh FennelIn a bowl, whisk together eggs, milk, 3 tablespoons...
