In the Christian firction genre, I do NOT care for Amish, dark, or romance fluff .

Robert Whitlow is my favorite Christian fiction author. Lots of legal mystery, little romance and the main character usually has a dog. 

Charles Martin is my 2nd favorite. Also mystery and relationshhips. Much like Nicholas Sparks book

Les Miserables It is a must read! But not the unabridged.

See list and descriptions at

http://heartofwisdom.com/blog/christian-fiction-recommendations/

I too like Charles Martin, it looks like you have read The Mountain Between Us, was that good?

You might try posting this in the Christian Lit Forum too.

The Mountain Between us was GREAT!

I really like the "Back to Brewster" series by Roxanne Henke. The first book is called "After Anne."

Sherry

Frank Peretti is a good Christian fiction author, I think.  He does mystery, mixed with the supernatural.  My favorites by him are "This Present Darkness" and "Piercing the Darkness".

I also like Calvin Miller's "Singer" trilogy, which is a retelling of the Jesus story in a poetic, almost song-like style.

Frank Peretti and Ted Dekker are both good horror/thriller authors.

I don't know if you would call her romance fluff- but I also enjoy luarainne snelling.  Her red river series is about pioneers from Norway and how they settle in North Dakota.  They are good fast moving books.

I also enjoy luarainne snelling.  Her red river series is about pioneers from Norway   

All the series by Brodie Thoene are good.  The Zion Chornicles are set in the period before and during WW2.  While there may be some romance in the book, they aren't the main story.  I find the writing to be more in depth than many of the Christian writers I read. 

Have you read Courting Morrow Little?  I just finished it and it was so much more in depth than a romance.  I don't know why they categorized it as such.  Lots of tension and political British/American/Indian action during the Revolutionary War.  She was a settler in Kentucky before there were states/colonies east of the first 13 colonies.  I found it pretty absorbing.  Would be great for an older teen, too.