If your original files are images (png format), start with a new epub in Sigil.
Add those image files to the images folder
Add those images to your main document.
You will have to make sure the image sizes are appropriate for the ereader, insert page breaks, etc.
I assume you know enough html to get this done.
Then run the epub through Kindle Previewer and you will have a Kindle version!
You could also insert the images into a Word document, get everything formatted the way you want, then save as a filtered web file.
Then bring this file into Sigil to create the epub.
The process would be easier if you had text files of the recipes instead of images.