In a bowl, combine together all of the dressing ingredients and whisk until emulsified. Alternatively, use a food processor or blender. Taste test the dressing and season with salt and pepper if required.
In a large bowl, mix together the pasta, spinach, gorgonzola, and half of the dressing. If you need more dressing, add a bit at a time to get the consistency just right. The remaining dressing can be served on the side or saved in the fridge for a green salad during the week.
The spinach gorgonzola pasta salad's flavor will taste much better if chilled for at least an hour before serving. Enjoy!