What is Boursin, and which flavor should I use?
Boursin is a soft, spreadable cheese with herbs and garlic. Garlic & Fine Herbs is the classic and works best here, but Shallot & Chive or Cracked Black Pepper are also great.
Do I need cream?
Nope. Boursin plus pasta water makes a creamy sauce on its own. If you want it extra lush, add 2 to 4 tablespoons of heavy cream at the end.
How do I keep the sauce from breaking?
Once the Boursin goes in, keep the heat at medium-low and stir gently. High heat is the fastest way to make cheese sauces turn grainy. If it starts to look off, pull the pan off the heat and add a splash of hot pasta water until it turns silky again.
Why did my sauce get grainy or clumpy?
Usually the heat was too high or the cheese went in without enough pasta water. Pull the pan off the heat, add a splash of hot pasta water, and stir until it smooths out.
What pasta shape is best?
Short shapes like penne, fusilli, or rigatoni hold the sauce well. Long noodles like spaghetti also work, but you will toss a bit longer to get that glossy coating.
Can I use pre-grated Parmesan or swap cheeses?
You can, but freshly grated Parmesan melts the smoothest. Pre-grated (the shelf-stable kind) can make the sauce a little less silky. Pecorino Romano works too, just use a bit less and taste first since it is saltier.
Can I add protein or veggies?
Absolutely. Stir in shredded rotisserie chicken, sautéed mushrooms, wilted spinach, peas, or roasted broccoli. If adding spinach, toss it in at the end so it stays bright.