Creating Shrimp Tomato Spinach Pasta in Garlic Butter Sauce is simple when you follow these straightforward steps:

1. Cook the Pasta: Boil water in a large pot. Add salt and cook the spaghetti according to package instructions until al dente. Reserve 1 cup of pasta water and drain the rest.
2. Sauté Shrimp: In a large skillet, melt 2 tablespoons of butter over medium heat. Add the shrimp, season with salt and pepper, and cook for 2-3 minutes on each side until they turn pink and opaque. Remove shrimp from the skillet and set them aside.
3. Prepare Garlic Butter: In the same skillet, add the remaining 2 tablespoons of butter. Once melted, add the minced garlic and red pepper flakes (if using). Sauté for about 1 minute until fragrant.
4. Add Tomatoes: Stir in the cherry tomatoes and cook for 2-3 minutes until they begin to soften.
5. Incorporate Spinach: Add the fresh spinach to the skillet. Cook for 1-2 minutes until the spinach wilts down.
6. Combine: Return the shrimp to the skillet. Add the cooked pasta and mix well. If necessary, add reserved pasta water to help the sauce adhere to the pasta.
7. Season: Taste and adjust seasoning with salt and pepper as needed.
8. Serve Warm: Garnish with chopped parsley and, if desired, sprinkle with grated Parmesan cheese.

These steps will guide you through making this flavorful dish that is both remarkable and delicious!