Penne is diagonally-cut straight tubes of macaroni. Penne rigate has ridges on the exterior; plain penne is smooth. The tubular shape, as well as the ridges, capture sauce.
Tuna is rich in Omega 3 fatty acids which may reduce the risk of heart disease.
Keep a wedge of Parmesan handy in the refrigerator to grate for the freshest Parmesan flavor.
For a wonderful vegetarian pasta, omit the tuna.
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