Zucchini Lasagna Roll-Ups

Zucchini Lasagna Roll-Ups
Ingredients
4 large zucchini
15 oz ricotta cheese
1/4 cup Parmesan cheese grated
1 1/2 cups mozzarella cheese shredded (divided)
1 large egg
2 cups marinara home-made or store-bought
salt & pepper to taste
1 tablespoon olive oil
Instructions