Super Fast Spinach, Pesto and Cheese Lasagna

Bahan-bahan (8 porsi)

• 3 cups ricotta cheese ((skim or low fat are fine))
• 1 cup shredded Parmesan cheese
• salt and pepper, (to taste)
• 1 large egg
• Two 10-ounce packages frozen chopped spinach, (thawed and squeezed dry)
• One 7-ounce container prepared pesto
• 4 cups bottled chunky pasta sauce, (divided)
• 12 whole lasagna noodles ((cooked))
• 2 cups grated fontina cheese