I just finished reading Bella at Midnight by Dianne Stanley. It was exactly what a middle grade fantasy novel should be. I wished I could have spent more time with the characters, there were references to famous fairy tales (especially Cinderella) but the plot wasn't hemmed in by them, and there was just enough romance to set a ten-year-old girls heart aflutter.
I think Stanley may be the next Robin McKinley... I know that my first impressions of Bella brought back memories of my first readings of The Hero and The Crown and The Blue Sword!