Cook pasta to al-dente according to package directions. Be sure to reserve some of the pasta water before draining!
8 oz spaghetti
While the pasta is cooking, bring a large pan to medium heat. Once hot, add butter and let it melt. Then, add garlic and sauté for 1 minute until fragrant.
1 tbsp unsalted butter, 2 garlic cloves
Reduce heat to medium-low and slowly add in the heavy cream, lemon juice, lemon zest and parmesan. Add in the black pepper and season to taste with kosher salt. Continue cooking and stirring for several minutes until the parmesan is melted and the sauce is smooth and warm.
½ cup heavy cream, juice from 1 small lemon, zest from ½ lemon, 1 tsp black pepper, kosher salt, ½ cup finely grated parmesan
Add in the cooked pasta and toss to combine. Add several splashes of the reserved pasta water as needed to thin the sauce and help it coat the pasta.
reserved pasta water
Top with more grated parmesan, fresh cracked black pepper and/or parsley if desired. Enjoy!