Set default genesis theme settings

default-genesis-theme-settings.php

<?php
/**
 * Set default Genesis Theme Options
 * 
 * @author Joshua David Nelson, josh@joshuadnelson.com
 */
add_filter( 'genesis_theme_settings_defaults', 'jdn_theme_settings' );
function jdn_theme_settings( $defaults ) {
	$defaults = array(
		'update'                    => 1,
		'blog_title'                => 'text',
		'header_right'              => 0,
		'site_layout'               => genesis_get_default_layout(),
		'superfish'                 => 0,
		'nav_extras'                => '',
		'nav_extras_twitter_id'     => '',
		'nav_extras_twitter_text'   => __( 'Follow me on Twitter', 'genesis' ),
		'feed_uri'                  => '',
		'comments_feed_uri'         => '',
		'redirect_feeds'            => 0,
		'comments_pages'            => 0,
		'comments_posts'            => 1,
		'trackbacks_pages'          => 0,
		'trackbacks_posts'          => 1,
		'breadcrumb_home'           => 0,
		'breadcrumb_front_page'     => 0,
		'breadcrumb_posts_page'     => 0,
		'breadcrumb_single'         => 0,
		'breadcrumb_page'           => 0,
		'breadcrumb_archive'        => 0,
		'breadcrumb_404'            => 0,
		'breadcrumb_attachment'     => 0,
		'content_archive'           => 'full',
		'content_archive_thumbnail' => 0,
		'posts_nav'                 => 'older-newer',
		'blog_cat'                  => '',
		'blog_cat_exclude'          => '',
		'blog_cat_num'              => 10,
		'header_scripts'            => '',
		'footer_scripts'            => '',
		'theme_version'             => PARENT_THEME_VERSION,
		'db_version'                => PARENT_DB_VERSION,
	);
	return $defaults;
}

This shows everything, you would set a specific default with something like this:

add_filter( 'genesis_theme_seetings_defaults', 'jdn_theme_settings' );
function jdn_theme_settings( $defaults ) {
    $defaults['site_layout'] = 'content-sidebar'; // set the default layout
    return $defaults;
}