My bottom_index.ejs looks like that:
The bottom section
In my code I declare ejs:
ejs = require(\'ejs\')
Parameters are passed to EJS template as a JS plain object. For your example it sholud be:
botom_index_ejs({ bottom_text : 'The bottom section' });
Update:
test.js
var fs = require('fs');
var ejs = require('ejs');
var compiled = ejs.compile(fs.readFileSync(__dirname + '/test.ejs', 'utf8'));
var html = compiled({ title : 'EJS', text : 'Hello, World!' });
console.log(html);
test.ejs
<%= title %>
<%= text %>