I found a simple buttercream recipe online (buttercream dream icing) I've used it a few times but it's just way too sweet. Can someone please help?

Try adding a pinch of salt, they say it levels it
HTH

What is the recipe? Maybe decrease the ps by a half a cup.

Here is a recipe that works for me and isn't excessively sweet:

8 C confectioners sugar
1 C shortening (prefer high ratio)
1 C salted butter (softened)
1 T clear vanilla
1 T butter
1/2 cup milk (pour in slowly)

You can add more milk and flavoring to fit your needs. Mix shortening and butter together until creamy and then add the other ingredients one at a time. Mix on low.

Thanks!