Step 1

Preheat oven to 350°F degrees.

Step 2

Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or a little less than al dente; drain and rinse with cold water.

Step 3

In a large bowl, combine ricotta, Kaltbach cheese, half the mozzarella cheese, egg, Italian seasoning, salt and pepper. Spread ¾ of the spaghetti sauce on the bottom of a 9x13 inch baking dish.

Step 4

Spoon the cheese mixture into the cooked shells and place in the baking dish. Pour remaining spaghetti sauce over shells and sprinkle with remaining mozzarella cheese.

Step 5

Bake in preheated oven covered (preferably but not necessary) for 30-35 minutes, until edges are bubbly and shells are slightly set.