Place parmesan and lemon zest into Thermomix bowl and mill 10 sec/speed 10. Set aside.
Place garlic into Thermomix bowl and chop 3 sec/speed 6. Scrape down sides of bowl, add EVOO and saute 5 min/Varoma/speed 1.
Place cream, egg, mustard, feta, artichokes and spinach into Thermomix bowl and blend 5 sec/speed 7. Cook 5 min/100ºC/speed 1.
Adjust seasoning to taste, add 65g of the milled parmesan and lemon juice and mix 5 sec/speed 5. Set sauce aside in insulated serving bowl while you cook pasta.
Place 1.2L boiling water into Thermomix bowl.
Add pasta through hole in lid and cook 10-12 min/100ºC/Reverse/speed soft or as long as package directs.
Drain cooked pasta through basket, then toss with sauce and halved tomatoes. Sprinkle with remaining milled parmesan before serving immediately.