Which Carrabba's dish includes a spicy marinara over penne?

The dish that features a spicy marinara sauce over penne is Penne Arrabbiata. This dish is characterized by its use of a robust, spicy marinara, which is a crucial element in defining it. The term "Arrabbiata" itself translates to "angry" in Italian, indicating the heat from the red pepper flakes typically included in the sauce.

In contrast, Pasta Primavera emphasizes fresh vegetables and is not reliant on a spicy tomato sauce, while Pasta Al Forno is a baked pasta dish that usually incorporates a variety of cheeses and is not specifically served with spicy marinara. Fettuccine Alfredo centers around a creamy, rich sauce rather than a tomato-based option. Thus, Penne Arrabbiata stands out distinctly with its spicy marinara over penne pasta, making it the correct choice.