Here's how to make Blogger display all your blog entries in the Blog Archive, without making your users expand the years, then months, to view a chronological list of your blog entries.
Use this in the CSS portion of your Blogger Template:
#ArchiveList .collapsed ul { display: block; }
#ArchiveList .toggle, .post-count {display: none;}
I put it at the end of my CSS on instinct.
Your Blogger Template can be gotten to like this: customize: layout: edit html: after the variable definitions and before the body tag.