```ruby
node["unicorn"]["installs"] = [{ "app_root" => "/var/www/apps/redtape/current" }]

include_recipe "unicorn"
```

Correct name of the recipe.
user
```ruby
node["unicorn"]["installs"] = [{ "app_root" => "/var/www/apps/redtape/current" }]

include_recipe "chef-unicorn"
```
assistant