Preheat oven to 350°F ( 176° C ), get the baking sheet ready wiht aluminum foil for easy cleaning.
In a separete bowl add the hot water and pitted-dates and soak for a few minutes.
In a mixing bowl add the banana, mush it with a fork, add the vanilla, baking powder and salt. Mix it well and set aside.
In a hihg speed belnder, add the almons,walnuts, pecans and oats. blend until is fine, but with texture. Pour the mixture into the banana mixture and mix it.
Next add the rice flour to the banana and nuts mixture and combine well. Set aside.
Get the dates out of the water and roguhly chopped and add to mixture. Mix it well, if the mixture is too dry add 1-2 Tbsp of water. The texture has to be like cookie dough.
Make the cookies and set on the baking sheet, place on the oven for 12-15 minutes. The bottoms will be brown and the top might be a little soft. Oven temperature may vary.
Notes
Make sure to store the cookies in an air thigh container, place in the refrigerator, if not the banana will be make them go bad fast.
They will stay fresh in the refrigerator for up to 2 weeks.
If you want to freeze them, place in a freezer ziplock bag, they will stay good for a month.