@rockhhock I was using the recipe below. But, I added mashed up dates and chia and flax seeds to the mix.
Recipe says a week in the fridge or 4-6 weeks in the freezer. I have vacuum sealed in bags so am hoping they will last a month
https://eatsleepwild.com/the-best-homemade-energy-bars-for-hiking-and-backpacking/