Stuffed Jumbo Shells

1 box Jumbo Shells
1 jar Tomato Sauce (your favorite spaghetti sauce)
1 pound ground beef
2 tablespoons extra virgin olive oil
1 box of frozen chopped spinach (thaw and squeeze out all water)
1 cup finely chopped onion
1 clove garlic, minced
1 teaspoon salt
1/4 teaspoon freshly ground black pepper
1/8 teaspoon ground nutmeg
1 egg
1/4 cup freshly grated Parmigiano cheese

PREHEAT oven to 350 F.COOK Shells according to package directions; drain. COOK ground beef in a large skillet over medium-high heat 4 minutes or until no longer pink, stirring occasionally. Drain grease.ADD oil, spinach, onion, garlic; continue cooking 10 minutes, stirring occasionally. Remove from heat.ADD seasonings and blend well. Let mixture cool.STIR in egg and Parmigiano cheese.POUR 1 cup of the Tomato and Basil Sauce into a 13x9 inch baking dish.FILL Shells with meat mixture; place in dish. Pour remaining sauce over shells; cover with foil.BAKE for 30 minutes or until thoroughly heated. I top with grated mozzarella cheese Too!!!