If the dates are hard, soak in warm water for 10 minutes until soft. Drain the excess water and pat the dates dry.
Add all of the ingredients (reserving the arrowroot starch) to a high-speed blender and blend until fully incorporated. Taste the BBQ sauce and season further to taste if desired.
Pour the sauce into a saucepan and set on the stove on medium-low heat. Bring to a low simmer and allow to simmer for 5 minutes, stirring often. Remove from the heat.
Add the arrowroot starch to a small bowl with about 1-2 tsp of cold water and whisk well. Add to the hot sauce and stir to combine to lightly thicken the suace.
Serve as a BBQ sauce immediately or store in the fridge in glass for 3-4 days.
Notes
You can modify this recipe with my homemade nightshade-free marinara sauce. If you do, I recommend adding 2 tsp of garlic powder and an extra 2 tsp of apple cider vinegar.