There are many, many fairy tale-inspired novels out there (if you wonder how many there is a pretty good roundup here) and many of them have some terrific blend-y things going on. Most commonly they are fantasy/romance blends, but you can find some great historical romances that lean on fairy tales as well. Some of these are fairly straightforward in their retellings, others are more fantasy (or romance) novels that use the bones of the stories and go off on their own narrative journeys. These are some of my favorites. Have I missed one of yours?
Daughter of the Forest by Juliet Marillier (Six Swans)
Beauty by Robin McKinley (Beauty and the Beast)
Deerskin by Robin McKinley (Donkeyskin)
Thomas the Rhymer by Ellen Kushner (Thomas the Rhymer)
Beauty by Sheri S. Tepper (Beauty and the Beast)
Tam Lin by Pamela Dean (Tam Lin)
War for the Oaks by Emma Bull (no specific fairy tale)
The Princess Bride by William Goldman (no specific fairy tale)
When Beauty Tamed the Beast by Eloisa James (Beauty and the Beast)
An Offer From a Gentleman (Bridgerton Series, Bk. 3) by Julia Quinn (Cinderella)
Lady of the Forest by Jennifer Roberson (Robin Hood)
Want more Fantasy/Romance blends or Historical Fiction/Romance blends? Try the genreblender!