Step 1

Bring a large saucepan of salted water to a boil. Cook the penne until al dente according package instructions. Reserve 1/2 cup pasta water before draining in a strainer.

Step 2

Heat the olive oil in a large skillet over medium heat. Sauté the garlic, red pepper flakes, salt and pepper until fragrant, about 30 seconds.

Step 3

Add the tomatoes and sauté for 2 minutes.

Step 4

Stir the pasta into the tomatoes.

Step 5

Pour in the reserved pasta cooking water letting it bubble for a couple minutes, stirring to coat the pasta.

Step 6

Fold in the Parmesan followed by the arugula.

Step 7

Garnish with parsley and additional cheese before serving.