Customize Read More button below content/excerpts in Genesis

Default:
Customize Post Excerpts Content limit in Genesis

This is for singular post page

add_action( 'genesis_entry_content', 'gk_custom_add_read_more' );
/**
 * Add Read More button below post excerpts/content on archives.
 */
function gk_custom_add_read_more() {
    // if this is a singular page, abort.
    if ( is_singular() ) {
        return;
    }
    printf( '<a href="%s" class="more-link button">%s</a>', get_permalink(), esc_html__( 'Continue Reading' ) );
}

From Essence Pro

add_filter( 'get_the_content_limit', 'essence_content_limit_read_more_markup', 10, 3 );
/**
 * Modifies the generic more link markup for posts.
 *
 * @since 1.0.0
 *
 * @param string $output The current full HTML.
 * @param string $content The content HTML.
 * @param string $link The link HTML.
 * @return string The new more link HTML.
 */
function essence_content_limit_read_more_markup( $output, $content, $link ) {

	if ( is_page_template( 'page_blog.php' ) || is_home() || is_archive() || is_search() ) {
		$link = sprintf( '<a href="%s" class="more-link button text">%s</a>', get_the_permalink(), genesis_a11y_more_link( __( 'Continue Reading', 'essence-pro' ) ) );
	}

	$output = sprintf( '<p>%s &#x02026;</p><p class="more-link-wrap">%s</p>', $content, str_replace( '&#x02026;', '', $link ) );

	return $output;

}