First, lets create a text. In this tutorial, we used Minion Pro font, style - bold, size - 48px, Smooth. It is best to use bold or else you won't really get the same result.
Next, duplicate the layer 2 times with your text and apply to both sections/layers style overlay color #a58c40.
Now "overtighten" each of these layers down in increments of 1px and connect them with Ctrl + E. Thus we get a small amount from the bottom. You can also use an alternative and simpler method of creating a volume using the Drop Shadow layer stile to a distance of 2px, but if you need to com