There is a bug with level 851 of CCS.

CCfan1026

I've gotten all the ingredients but it still shows one to go.  I bought gold  bars to see what it was objecting to since I cleared it on my last move and there were no ingredients left.  I want my $$ back or bars credited, as well as my hammer that I used to clear the game.  

Wunderbaum

Hi CCfan! Haven't seen any issues with that level. Are you playing the level like this example:

https://www.youtube.com/watch?v=5x8deuZDDi8