1teaspoonolive oil - or any cooking oil, to prevent pasta from clumping
3tablespoons(42g)unsalted butter - (Note A)
1tablespoonall purpose flour
2clovesgarlic - large cloves, finely minced
½cup(118ml)chicken or vegetable broth/stock - low sodium (Note A)
¾cup(237ml)heavy whipping cream
½cup(50g)parmesan cheese, freshly grated - press down tightly into the cup to measure (Note B)
½teaspoonsalt
1teaspoonground black pepper
1teaspoonblack truffle oil - (Note C)
some finely chopped parsley - optional, for garnish
Instructions
In a large pot, bring salted water to a boil. Cook your rigatoni pasta until it's al dente, following the package instructions (See Note D). Once cooked, drain in a colander. Just before draining, reserve a small amount of pasta water for later. To prevent pasta from sticking together, drizzle olive oil on it and then gently and carefully mix it.
While the pasta is cooking, melt butter in a skillet over medium-low heat. Once melted, sprinkle in the flour and cook for 1 to 2 minutes. Stir constantly. Then add minced garlic to the bubbling mixture and sauté for about a minute – while continuing to stir.
Next add broth / stock, mix well and let it cook for one minute.
Pour in the heavy whipping cream and stir until the mixture is smooth. Bring it to a gentle simmer. Then reduce the heat to low and allow to cook for 3 to 4 minutes or until the sauce slightly thickens.
Add grated parmesan cheese (reserve a small portion for garnish), salt and pepper. Stir until the cheese is completely melted and the sauce turns nice and smooth. Turn the heat off.
Mix in the truffle oil.
Combine the drained rigatoni pasta with the truffle cream sauce, gently mixing until well coated. If the sauce becomes too thick, add a splash of reserved pasta water or plain water.
Sprinkle on that parmesan you saved earlier, plus some fresh chopped parsley. Serve right away.
Notes
Note A: Salt control – If using salted butter and/or regular broth (not the low-sodium kind), cut the amount of added salt in half. Taste the final dish and then add more salt if needed.Note B: Parmesan – If you want to try a different cheese, grana padano, pecorino romano or asiago can work great as substitutes.Note C: Truffle oil – You can use white truffle oil instead of black, but you may need to add a bit more. Start with less, keep tasting and add gradually.Note D: Cooking pasta – For cooking 8 ounces of rigatoni, I used 8 cups of water and 2 teaspoons salt and boiled for 9 minutes (followed the cook time instructions on the package).Note E: Helpful content – Click on the links below for related useful content in the main body of the post.