When I was a little girl, my grandma used to take me to Denny's for breakfast. The first time I had eggs was when my grandma ordered a Denny's Pizza Omelet and had me try it. I instantly fell in love and would order one time and time again, then they took it off their menu. Well, I didn't give up and tried to create this yummy breakfast treat myself. Still my favorite.
Beat eggs with milk; season with salt and pepper. Spray an 8-inch (20 cm) non-stick skillet with cooking spray. Heat skillet over medium-high heat.
Pour in egg mixture. As mixture sets at the edges, with spatula, gently push cooked portions towards center. When eggs are almost set on surface but still look moist, spread pizza sauce over half of the omelet.
Top with pepperoni and Mozzarella cheese. Fold the omelet in half and slide onto a warm plate. Sprinkle with Parmesan cheese.