Override the default layout option with Genesis

functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Override the default layout option with Genesis (choose one)
 * 
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/default-layout/
 */
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_content_sidebar' );
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_sidebar_content' );
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_content_sidebar_sidebar' );
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_sidebar_sidebar_content' );
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_sidebar_content_sidebar' );
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_full_width_content' );