12ounces(340grams)spaghetticook it in ¾ gallon (3.5 Liters) of water with 1½ tablespoons (20 grams) of salt
⅓cup(80ml)extra virgin olive oil
3clovesgarlicgrated, minced, or thinly sliced
1teaspoonred pepper flakesor a finely chopped red chili. Add more or less heat to taste.
3tablespoonsflat-leaf parsleyfinely chopped
Cook the Pasta: Bring a big pot of water to a boil and add a good amount of salt (the water should taste a little salty). Add 12 ounces spaghetti and stir once or twice so it doesn’t stick. Cook about 1 minute less than the package says.Before draining, scoop out 1 cup of the pasta water and save it.While the pasta cooks, finely chop or grate 3 cloves garlic and 3 tablespoons flat-leaf parsley. Keep them nearby.
Flavor the Oil: Pour ⅓ cup extra virgin olive oil into a large pan and turn the heat to low. When the oil is warm (not sizzling, not smoking), add the garlic and chili. Let them gently sizzle for about 30 seconds, then turn off the heat so the garlic doesn’t burn.
Add the Parsley: Just before the pasta finishes cooking, turn the heat back on low. When the garlic starts sizzling again, add the parsley. Stir for 30 seconds, just until it smells good and looks bright green.
Toss Everything Together: Add the drained spaghetti to the pan. Pour in ¼ cup of the saved pasta water and add a small pinch of salt. Toss over medium heat until the pasta looks shiny and coated (1 to 2 minutes) and there’s no liquid left in the pan. Serve right away and enjoy.
Optional Add-Ins and Easy Variations
Add Protein Stir in buttery cannellini or butter beans for a plant-based boost, or sauté shrimp directly in the garlicky oil for a simple upgrade.
Brighten with Lemon Finish with lemon zest and a small squeeze of juice. It adds freshness and turns the dish into a light, lemony pasta that feels completely new.
Add More Vegetables Fold in a handful of spinach and let it gently wilt, or toss in tender broccoli florets that have been lightly steamed or boiled.
Add a Spoon of Miso It may sound unexpected, but a small spoon of white miso melts into the sauce and adds deep, savory umami without overpowering the garlic and olive oil.
Tips
Go low and slow with the oil – Warm it gently so the garlic softly sizzles, not fries. If it browns too fast, lift the pan off the heat.
Don’t add oil to pasta water – It doesn’t stop sticking and actually keeps sauce from clinging. Just stir well at the start.
Drain a little early – Finishing the pasta in the pan helps it soak up flavor and turn glossy.
Use pasta water on purpose – Add it slowly while tossing until the sauce looks silky, not greasy.
Parsley goes in last – It only needs a few seconds to smell fresh and bright.
Warm chili briefly – A short heat brings gentle spice; too much makes it harsh.
Use good olive oil – With so few ingredients, fresh extra virgin olive oil makes a big difference.
Salt the water well – This is how the pasta gets flavor all the way through.
Serve right away – This pasta is best hot and silky, straight from the pan.