What flavor are you going for? I think chocolate is amazing with smbc and my go to is the Hershey's perfectly chocolate cake recipe.
I also suggest you take a peek at the crispy magic buttercream recipe floating around on the Internet. It's smbc but then you add in powdered sugar and milk (ahem, heavy cream) so it's a smbc/buttercream hybrid that is amazing.
What flavor are you going for? I think chocolate is amazing with smbc and my go to is the Hershey's perfectly chocolate cake recipe.
This is my go-to. I spent a long time thinking there were no good chocolate cake recipes until I returned to the simplicity of Hershey's. I add 1/8 c cocoa powder and 1/4 c sour cream to the standard recipe.