ingredients 2 tablespoons butter 1 small onion minced 3/4 teaspoon salt 2 medium garlic cloves, minced 1 1/4 cups orzo 2 1/2 cups low-sodium chicken broth 1 cup frozen peas, thawed 1 ounce parmesan cheese, grated (about 1 cup) 2 tablespoons fresh minced parsley leaves ground black pepper 1 lemon, cut i