Show full posts on post page

I recently moved my friend’s wordpress.com site to a custom domain. One thing that changed was that now the posts page (the front page) shows a grid of featured images for the recent posts instead of the entire posts themselves, which is how it works on his wordpress.com site. I would like to keep things the same – does anyone know where to find the setting to show the full posts? I already have For each article in a feed, show full text…