Bring a large pot of salted water to a boil. Prepare the ingredients.
Cook pasta until al dente. Reserve about 1 cup pasta water.
Heat olive oil in a wide pan over medium heat.
Add garlic and chili flakes.
Cook gently until fragrant, for about 30–60 seconds.
Add cherry tomatoes, a pinch of salt and freshly ground black pepper.
Let them cook undisturbed for a few minutes, then start stirring occasionally.
After about 5–8 minutes, they’ll soften and burst.
Lightly press some with a spoon to release juices.
Let it simmer until you get a chunky, saucy consistency, for a few more minutes.
Add drained pasta straight into the pan.
Add Parmesan, and torn basil. Splash in some pasta water.
Toss everything together until glossy and emulsified.
Top with more grated Parmesan and fresh basil. Serve immediately.