Generating a Yaml Config file with Chef

app.yml.erb

<%= @content %>

config.json

"config_content": {
  "somestuff": {
    "foo": "bar",
    "bla": "batz"
  }
}

sample.rb

require "yaml"

template "/some/path/to/file.yml" do
  mode   0644
  variables :content => YAML::dump(YAML::dump(config_content.to_hash).gsub('!map:Mash',''))
  source "app.yml.erb"
end

why not :
variables :content => config_content.to_hash.to_yaml
?