1. Preheat oven to 375°.
2. Combine pasta sauce and 1 cup water. Pour half of pasta sauce mixture into a 13 x 9inch glass or ceramic baking dish coated with cooking spray.
3. Combine 1 1/4 cups mozzarella, Parmesan cheese, and next 4 ingredients. Spoon mixture into a heavy-duty zip-top plastic bag; snip off 1 corner of bag. Squeeze about 3 tablespoons cheese mixture into each uncooked pasta shell. Arrange stuffed shells in a single layer over sauce mixture; pour remaining sauce mixture over shells. Top with remaining 3/4 cup mozzarella. Cover tightly with foil.
4. Bake at 375° for 1 hour or until shells are tender. Let stand 10 minutes before serving.
Young Chefs can:
Pour pasta sauce into bottom of dish
Count out shells
Older Chefs can:
Help squeeze cheese mixture into shells
Arrange shells in pan
Pour sauce over shells, and sprinkle with cheese