Steps
1. In a medium-sized pot bring 4 cups of salted water to a boil.
2. Add pasta to boiling water and cook for 8-10 minutes or until al dente.
3. While pasta is cooking, heat olive oil in a skillet over medium heat.
4. Add mushroom slices and cook until golden brown, about 5 minutes.
5. Add spinach and tomatoes and season with salt and pepper.
6. Continue to cook until spinach is wilted and tomatoes are softened, about 3 minutes.
7. Drain pasta and toss with mushroom, spinach, and tomato mixture.
8. Serve hot.