Can I return 'You searched for:######' at the top of search results?

Hi,

The search term should be in the URL query string - so you can use e.g. a query string macro in an editable region or in the content before property of given web part. However, be sure the macro is safe and no SQLi vulnerability is possible (more on SQLi). Or, another option is to create custom transformation function that will simply read the query string value - again be careful - SQLi.

Try {%searchtext%}