Step 1

Cook pasta al dente in a large stockpot of generously-salted water according to package instructions.

Step 2

While pasta is cooking, heat olive oil (or melt the butter) in a saute pan over medium-high heat. Add the sliced garlic and cook for 2-3 minutes, or until it begins to turn just slightly golden. Remove from heat.  (And if the pasta is not yet ready, transfer the garlic to a separate dish to prevent it from overcooking.)

Step 3

Once the pasta is cooked, drain it. Then immediately stir in the garlic and olive oil mixture, arugula, and Parmesan cheese.  Toss until combined.

Step 4

Serve immediately, topped with extra Parmesan cheese (and toasted pine nuts, if using).