Start by boiling the pasta in salted water until al dente. I always reserve a little pasta water before draining, which helps loosen the sauce later.
Heat olive oil in a skillet over medium heat. Add garlic and cook until fragrant, then gradually add spinach, stirring until wilted and vibrant green.
Add cream cheese and a splash of pasta water to the skillet. Stir in parmesan cheese and nutmeg, creating a silky sauce that clings to every noodle.
Add the drained pasta to the skillet and toss until fully coated in the creamy spinach sauce. Adjust consistency with more pasta water if needed and season with salt and pepper.
Transfer to plates, drizzle with extra olive oil, and sprinkle additional parmesan if desired. Serve warm for the best flavor.