Pasta Arrabiata is a classic! It's healthy, easy to make, and the fiery tomato sauce will please all the spice lovers out there.
Add the oil to a medium-sized pot over medium-high heat.
Once the oil is hot, add the garlic and let it cook for a minute or so (watch it closely and don't let it brown).
Stir in the red pepper flakes, tomatoes, and sugar (if using, see note). Reduce the heat and let it simmer, stirring occasionally, for about 15 minutes.
While the sauce is simmering, boil a large, salted pot of water for your pasta. Cook it al dente according to package directions.
Season the sauce with salt & pepper as needed. I added a fair bit of salt.
Drain the pasta and toss with the sauce (you can add a little pasta water too if you wish). Top with freshly grated parmesan cheese.