One-Pan Orzo With Spinach and Feta

Name: One-Pan Orzo With Spinach and Feta
Cook time: 30 min
Total time: 30 min
Cuisine: Mediterranean
Ingredients: 2 tablespoons unsalted butter; 4 large scallions, trimmed and thinly sliced; 2 large garlic cloves, minced; 8 ounces baby spinach leaves (8 cups), coarsely chopped; 1 teaspoon kosher salt; 1 3/4 cups low-sodium chicken or vegetable stock; 1 cup orzo; 1 teaspoon finely grated lemon zest (from 1 lemon); 3/4 cup crumbled feta (3 ounces), plus more for garnish; 1/2 cup frozen peas, thawed (optional); 1 cup chopped fresh dill, or use parsley or cilantro