Preparation Steps

• Cook spaghetti according to package directions until al dente. Reserve about 1 cup of the pasta water before draining.
• While the pasta is cooking, heat the olive oil in a large skillet over medium heat. Add the minced garlic and red pepper flakes (if using) and cook until fragrant, about 1 minute, being careful not to burn the garlic.
• Add the fresh spinach to the skillet in batches, stirring until it wilts.
• Add the drained spaghetti to the skillet with the spinach and garlic. Toss to combine.
• Add the grated Parmesan cheese, lemon juice, and a splash of the reserved pasta water. Toss until the sauce emulsifies and coats the spaghetti. Add more pasta water as needed to reach desired consistency.
• Season with salt and black pepper to taste. Serve immediately, with extra Parmesan cheese on top if desired.