Cook the Orzo: Bring a large pot of heavily salted water to a rolling boil. Add the uncooked orzo pasta and cook for 8 to 10 minutes until it is perfectly al dente. Drain completely through a fine-mesh colander, rinse briefly with cold water, and let it cool completely to room temperature.
Toast the Walnuts: Place the chopped walnuts into a dry skillet over medium-low heat. Toast them for 3 to 4 minutes, stirring constantly to prevent burning. Remove them from the hot pan immediately once they are aromatic and golden brown, then let them cool down.
Mix the Vinaigrette: In a small bowl or a lidded mason jar, whisk together the extra-virgin olive oil, fresh lemon juice, lemon zest, honey (or maple syrup), sea salt, and black pepper until completely emulsified.
Assemble the Base: In a large mixing bowl, combine the cooled orzo pasta, sweet dried cranberries, cooled toasted walnuts, and finely chopped fresh parsley (plus any optional chopped greens you wish to include). Drizzle the fresh lemon vinaigrette evenly over the top and toss thoroughly until all components are coated.
Fold in Feta & Chill: Gently fold in the crumbled feta cheese last, taking care not to smash the pieces. Cover the bowl and refrigerate for 20 to 30 minutes before serving to allow the flavors to combine beautifully.