In a large skillet, add the ground turkey, diced onion, minced garlic, 1/2 teaspoon black pepper, and cayenne pepper. Cook over medium-high heat, breaking up the meat as you go, until turkey has lost its pink color. Drain any fat from turkey and add the entire jar of marinara sauce, stir.
Cook ziti or penne shells according to the package instructions until al dente (firm but not hard). Drain and add to cooked turkey and marinara.
Preheat oven to 375 degrees.
In a large mixing bowl, combine cottage cheese, mozzarella cheese, ricotta, and 1/2 teaspoon black pepper and dried oregano.
In a large casserole dish or 9" x 13" pan, add 1/2 of the turkey mixture (cooked turkey, marinara, and cooked shells), top with half the cheese mixture, repeat.
Cook uncovered for approximately 30 minutes or until cheese is melted and bubbly.
