so how is yours different ?
The two companies already have that product ...
If what you have is a genuine innovation on that..
that could be marketed as product... and bearing in mind...
You patent processes..
You copyright designs (art work).
Not sure you can call a recipe a an innovative process - merely the use of existing ones.
Best you could do is document your idea, and how you make it,
Ideally, how it can be done in production - which is a different issue to making one at home / in small batches. Shelf life, change of some components might be needed.
With that 'you had it first' documented and witnessed - so lodge with a lawyer, at least some upstanding reputable friends who could be believed in court - should you get that far, if you needed to challenge the big lawyers of a company (so yes, maybe a design/patent lawyer at the beginning - at least a notary).
You would then (if not already) re-check the internet for other people who may have had the idea before - youtube as well ?
- approach a company who who made similar products even Cinnabon ?
and see if they would be interested in 'developing' your idea to a product.
A better way would probably be to develop it and sell it yourself,
then have your company be bought out .. once it is seen as a viable product.
You still have the problem of the 'look a like' products, like the supermarket copy chocolates, cola's etc .. .that are the same but not the same...
The infamous 'Betty Crocker' company also had ideas..
Have you eliminated those ?
and others ...
Google "cinnamon crunch ideas"
and "cinnamon crunch recipe"