Easy Baked Manicotti

2 cups of your favorite spaghetti sauce, divided
1 egg, lightly beaten
1 3/4 cups Ricotta Cheese
1 1/2 cups shredded Mozzarella cheese
1/2 cup grated parmesan cheese
1/4 cup pesto
12 manicotti shells, cooked, rinsed in cold water

Preheat oven to 350. Spread 3/4 cup of the spaghetti sauce on bottom of 9x13 dish. Mix egg, cheeses and pesto until well blended. Spoon cheese mixture into large ziploc bag. Snip off a small bit of one of the bottom corners of the bag.