Here’s a snippet of code that I re-use often. It will display the post’s featured image above the content but under the entry title on the post page and the front page.
/* Display Featured Image on top of the post */ add_action( 'genesis_before_entry_content', 'featured_post_image', 8 ); function featured_post_image() { if ( ! is_singular( 'post' ) && ! is_front_page() ) return; the_post_thumbnail('post-image'); }