Preheat your oven to 400°F (200°C) to prepare for baking.
Cook the gnocchi according to the package instructions, then drain, cool under cold running water to stop the cooking, and set aside.
Whisk together the hot vegetable broth, cream cheese, basil pesto, and lemon zest in a mixing bowl until smooth to create a creamy sauce.
Toss the cooked gnocchi, wilted baby spinach, and chopped sundried tomatoes in the sauce, making sure everything is evenly coated
Transfer the gnocchi mixture to a casserole dish, spreading it out evenly.
Place the salmon fillets on top of the gnocchi mixture in the casserole dish.
Season the salmon fillets with salt and pepper to taste.
Bake in the preheated oven for 15-20 minutes, or until the salmon reaches an internal temperature of 125°F and is just cooked through.
Prepare the gremolata while the salmon is baking. In a small bowl, combine the chopped parsley, toasted pine nuts, lemon zest, lemon juice, minced garlic, and red pepper flakes. Mix well.
Remove the Salmon Gnocchi Bake from the oven and let it rest for a couple of minutes before serving.
Top with the gremolata right before serving for a burst of fresh, zesty flavor.