I have. With icing for his beard. They were fantastic.

One of the top-selling items in Highgate's small gift shops in a cookie-cutter in the shape of Karl Marx. 'Before we had the cookie-cutter, we sold lots of The Communist Manifesto,' Nick Powell, the visitor experience manager, told me. 'The sales of those have dropped off dramatically.'
'Did you have to think carefully,' I asked 'whether it was right to stock the cookie-cutters?'
'Do you mean are we dishonouring Marx by selling these things?'
'Yes,' I said. 'By bringing capitalism to bear upon his image.'
Powell laughed. He seemed to think the question absurdly po-faced, and perhaps it was. So I tried another: Have you ever made any Marx cookies yourself?'
'I have,' he said nodding. 'With icing for his beard. They were fantastic.'  

P. Ross,  A tomb with a view (2020), 117