Let’s dive into the cooking process, which is as straightforward as it is rewarding. Follow these steps for a delightful culinary experience:

1. Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente. Drain and set aside, reserving 1 cup of pasta water.
2. In a large skillet, heat the olive oil over medium heat. Add the chopped onion and sauté until translucent, about 5 minutes.
3. Stir in the garlic and red pepper flakes, cooking until fragrant, about 1 minute.
4. Add the sliced mushrooms and cook until they release their moisture and begin to brown, approximately 7 minutes.
5. Stir in the cherry tomatoes and cook until they soften, about 5 minutes more.
6. Reduce the heat to low and add the spinach, stirring until wilted.
7. Pour in the heavy cream and 1/2 cup of the reserved pasta water. Stir to combine, allowing the sauce to thicken slightly.
8. Add the cooked pasta to the skillet, tossing to coat with the sauce. If the sauce is too thick, add more pasta water as needed.
9. Season with salt and pepper to taste. If using, sprinkle with Parmesan cheese or nutritional yeast for added flavor.
10. Garnish with fresh basil leaves before serving.

Remember, cooking is an art, not a science. Feel free to adjust the seasoning or the level of creaminess to your liking. Mama Lou always said a recipe is just a guideline, and the true magic happens when you cook with your heart.