01 -
Finely dice the onion and mince the garlic cloves. Cook the pasta according to package instructions until al dente, then drain, reserving about ½ cup of the pasta water.
02 -
While the pasta is cooking, melt the butter in a large skillet over medium heat. Add the diced onions and sauté until soft and translucent, about 3-4 minutes. Add the minced garlic and cook for another 30 seconds until fragrant, being careful not to burn it.
03 -
Pour in the heavy cream and stir to combine. Add the frozen spinach (no need to thaw first) and cover the skillet. Let it simmer gently for about 5 minutes, or until the spinach is completely thawed and tender.
04 -
Season the sauce with a pinch of nutmeg, salt, and freshly ground black pepper to taste. Add the drained pasta directly to the sauce and toss until well coated. If the sauce seems too thick, add a splash of the reserved pasta water to reach your desired consistency. Serve immediately.