Boil the pasta in well-salted water (it should taste like the sea) until al dente. PRO TIP: Save a cup of pasta water before draining – it's liquid gold for the sauce!
While the pasta cooks, make the magic happen. In a large skillet over medium heat, add olive oil and minced garlic. Cook for 1 minute until fragrant but not brown. (Burnt garlic is the equivalent of a culinary walk of shame – avoid it!)
Create the sauce base. In a bowl, mix the ricotta, lemon zest, 2-3 tablespoons lemon juice, and salt and pepper until smooth. If it's too thick, add a splash of that reserved pasta water. Who knew cheese and lemon could be such soulmates?
Marry the components. Drain your pasta (remember that pasta water!) and add it directly to the skillet with the garlic. Toss to coat, then turn off the heat and add the ricotta mixture. Mix thoroughly so every strand gets coated in creamy goodness.
Finish like a pro. Add the Parmesan, red pepper flakes if using, and most of the basil. Toss again, adding splashes of pasta water as needed until you reach a silky consistency that coats the pasta. (Too dry? Sad pasta. Too wet? Soup. We want the Goldilocks zone here.)
Serve immediately with a drizzle of good olive oil, the remaining basil, extra Parmesan, and fresh black pepper. Maybe an extra squeeze of lemon if you're feeling zesty!