I found this on a canning website & had to try this for my husband.  Our peppers are growing sporadically, so I had to get some of them put up.  I can't handle hot & spicy things, but this is mild with a sweet after taste.  My husband LOVED IT.  It is super easy.
I cut this recipe by 3/4 th.  There was no way I had 40 peppers.  
9-10 hot banana peppers 
1 C yellow mustard
1 1/4 C sugar 
1/4 C honey
1 C vinegar (they had apple cider)
1/4 tsp salt 
3/8 C flour
1/4 C water (which I forgot to add). 
Blend peppers until smooth. Pour into pot add all other ingredients except flour. Bring to hard boil. Whisk flour & water until smooth & pour into boiling mixture. Continue to boil for 5 mins. Process in water canner for 5-10 mins.  This made 3 of those little jelly jars & 2 bigger ones.  At least enough for a years worth.
 
