Directions

1. In a large pot of boiling salted water, cook pasta according to package instructions; drain well.
2. Melt butter in a large skillet over medium heat. Add garlic, mushrooms and onion. Cook, stirring occasionally, until tender, about 3-4 minutes. Stir in thyme and dill until fragrant, about 1 minute; season with salt and pepper, to taste.
3. Whisk in flour until lightly browned, about 1 minute. Gradually whisk in vegetable broth, and cook, whisking constantly, until incorporated, about 1-2 minutes. Stir in half and half until slightly thickened, about 1-2 minutes.
4. Stir in baby spinach and Parmesan until the spinach has wilted, about 2 minutes. If the mixture is too thick, add more half and half as needed.
5. Stir in pasta and gently toss to combine.
6. Serve immediately, garnished with parsley, if desired.