Light the candles and uncork a bottle of Chianti — even if it is just a Tuesday night — because our shrimp fettuccine Alfredo tastes every bit as delicious as the dish you always order at Italian restaurants. And you won’t find an easier way to put together a dinner that’s quick enough for weeknights but special enough for date nights, with plump shrimp, sautéed mushrooms and bell peppers, and fettuccine pasta tossed in a creamy, garlicky white wine Alfredo sauce from scratch.