A big pot of quick-cooking seafood turns a weeknight meal into a party. Let the good times roll!
In a medium saucepan, bring 2 1/4 cups salted water to a boil. Add rice, stir, and return to a boil. Cover, reduce to a simmer, and cook until rice is tender, about 15 minutes. Remove pot from heat and let stand, covered, 5 minutes. Fluff with a fork.
Meanwhile, in a large heavy pot, melt butter over medium-high. Add celery, scallion whites, and garlic and cook until translucent, about 3 minutes. Add Creole seasoning and cook until fragrant, 1 minute.
Add Worcestershire, lemon, and shrimp and cook, stirring occasionally, until shrimp are pink and coated with sauce, about 4 minutes. Serve shrimp over rice with scallion greens on top.