Set a large skillet or Dutch oven over medium-high heat and add the butter. As soon as it melts, toss in the shrimp and sprinkle generously with salt and pepper. Sauté shrimp for 2-3 minutes per side, until cooked through. Transfer to a clean plate and set aside.
3 Tablespoons butter, 1 pound large shrimp, kosher salt and black pepper
Stir the orzo into the butter that remains in the pan and toast for about 1 minute. Stir in garlic and red pepper flakes, if using. Cook 30-60 seconds more, just until fragrant.
1 cup orzo, 3-4 cloves garlic, 1/4 teaspoon red pepper flakes
Stir in the wine and let it sizzle for about a minute, until almost completely evaporated. Add broth, scrape the bottom of the pan well, and let it come to a gentle boil.
1/3 cup dry white wine, 2 cups low-sodium chicken broth
Reduce heat to medium and simmer for about 10 minutes, stirring frequently. Adjust the heat as needed to keep it bubbling gently - not boiling rapidly. You want to still have a very small amount of visible liquid, even once the orzo is cooked. If at any point it starts to look too dry or too thick, don’t hesitate to stir in extra splashes of broth or water.
When the orzo is cooked, stir in the lemon juice and zest if using, then sample and season with salt and pepper to taste. Return shrimp to the pan, either on top of or mixed into the orzo, cover, and turn the heat completely off. Let it rest for 3-4 minutes, while the shrimp warms back through and the orzo soaks up the last bit of broth.
1 Tablespoon lemon juice
Serve right away with fresh parsley, lemon wedges, and more pepper if desired. Enjoy!
1-2 Tablespoons finely chopped fresh parsley