In my grails project I have created two files: src/main/webapp/abc.html src/main/webapp/test.gsp Inside each I have just the expression: ${1+1} test.gsp outputs: 2 , which is correct. abc.html outputs the literal : ${1+1} , which is wrong for what I’m going for. I tried to tell grails to enable servlet processing for html via setting: grails: views: gsp: servlet: mapping: [“/”, “*.gsp”, “*.html”] but this has not effect, I assume because these files are not in the grails convention over configuration view folder structure. Is there a way I can turn on gsp rendering for .html files in the src/main/webapp/ folder?