Overcooked! 2 has a massive library of additional content. If you are looking for specific themes or new mechanics, these are the primary packs available: Season Pass:
If you haven't bought the game yet, All You Can Eat is a better value ($39.99 retail). But if you only want Overcooked 2 and its expansions on your CFW Switch, the NSP/Update/DLC combo remains the gold standard. overcooked 2 switch nsp update dlc link
Alternatively, if you're looking for a specific DLC link, I couldn't find any direct links. However, you can try searching for "Overcooked 2 DLC" on the Nintendo eShop or on a search engine to find more information. Overcooked
Here are the links to download the NSP update and DLC for Overcooked 2: But if you only want Overcooked 2 and
The game has received numerous content packs and seasonal updates since its release: Overcooked! 2 (Switch) patch notes
Using unofficial NSPs while connected to Nintendo's servers can lead to a permanent console ban, preventing you from ever using the eShop or playing online again.