Model.find().toArray() claiming to not have .toArray() method

I am very new to Node.js and MongoDB and am trying to piece together my own blogging application. I have a problem trying to query through my 'Blog' model for ones with a specific username. When I try to run:

var userBlogs = function(username) {
  ub = Blog.find({author: username}).toArray();
  ub = ub.reverse();
};

I get an error:

TypeError: Object #<Query> has no method 'toArray'

I know globals are bad but I've just been trying to get it to work. The Mongo documentation claims that a cursor is returned which can have the toArray() method called on it. I have no idea why it won't work.

Here is my schema/model creation:

var blogSchema = mongoose.Schema({
  title: {type:String, required: true},
  author: String,
  content: {type:String, required: true},
  timestamp: String
});
var Blog = mongoose.model('Blog', blogSchema);

Here are the /login and /readblog requests

app.get('/readblog', ensureAuthenticated, function(req, res) {
  res.render('readblog', {user: req.user, blogs: ub})
})

app.get('/login', function(req, res){
  res.render('login', { user: req.user, message: req.session.messages });
});

app.post('/login', 
  passport.authenticate('local', { failureRedirect: '/login'}),
  function(req, res) {
    userBlogs(req.user.username);
    res.redirect('/');
  });
});

The end result is supposed to work with this Jade:

extends layout

block content
    if blogs
        for blog in blogs
            h2= blog[title]
            h4= blog[author]
            p= blog[content]
            h4= blog[timestamp]
    a(href="/writeblog") Write a new blog

How can I get the query to output an array, or even work as an object?