I have always tried to find low effort high impact dishes like chocolate truffles as opposed to fudge. It is easier to make truffles than fudge and it is usually received far better.
Key Lime Pie is easy but always get rave reviews. Chicken Cacciatore is pretty low effort and is very popular.
Do you have any low effort high impact dishes? I would like to hear about them. Post a recipe or a link to a recipe if you like.