Vegan Stuffed Shells

Name: Vegan Stuffed Shells
Ingredients: Flaky sea salt; 6 oz. (170 g) jumbo pasta shells; 2 cups (260 g) raw cashews, soaked overnight, drained, and rinsed; 1⁄2 cup (120 mL) plus 1 Tbsp. nut milk, oat milk, soy milk, or store-bought plant-based milk; 1½ Tbsp. white wine vinegar; 1½ Tbsp. nutritional yeast; 1 garlic clove, peeled, left whole; ½ tsp. onion powder; ¾ tsp. finely grated lemon zest (from ½ lemon); Scant 1½ cups (190 g) chopped canned or jarred artichoke hearts (packed in oil or water), drained; 3 cups (700 mL) homemade or store-bought marinara sauce, divided; 3 Tbsp. finely chopped fresh parsley