Meet fill()

use Template3;

print Template3->fill(
    file => 'hello.tt3',
    data => { name => 'Badger' },
Thus Spake Andy:

The process() method works like it does in TT2. It adds headers, footers, wrappers, etc., and error handling mechanisms (note that the process() method was broken at the time of writing but should be fixed Real Soon Now). The fill() method provides a lower-level method to fetch and fill a single template. The first two arguments are the template type (text, file, or something indicating a custom provider, e.g. database, http, etc) and template name (strictly this is a scheme/uri pair). The remaining arguments are processing options. Here we specify the data we want inserted into the template (note: these arguments are subject to change). The method returns the output generated or throws an error.