Preheat the oven to 425 degrees.
Line the sheet pan with a silicone baking mat or parchment paper.
Combine the cut vegetables and the dry (uncooked) gnocchi into a large bowl.
Using your fingers, separate any gnocchi stuck together.
Combine the balsamic vinegar, lemon juice, and Dijon mustard in a small container and shake.
Pour the dressing over the vegetable and gnocchi mixture and toss together.
If time permits, allow the mixture to marinate covered in the refrigerator.
Pour the gnocchi and vegetable mixture onto a prepared baking sheet.
Sprinkle with Italian seasoning.
Place the baking sheet uncovered on the middle rack of the oven.
Cook for 25-30 minutes, using a spatula to rotate the vegetables a few times while roasting.
Or, preheat the baking pan while preparing the vegetable and gnocchi mixture, and carefully add to a hot preheated pan to avoid having to stir while cooking.
Remove from the oven, discard rosemary, and serve on plates for added greens, add gnocchi and vegetable mixture onto a bed of greens such as spinach or kale.
Remove the full sprigs of rosemary.
Sprinkle with vegan parmesan cheese and chopped parsley.
I served it with grilled sourdough bread.