Preheat oven to 350 degrees F. Line a muffin pan with 4 aluminum muffins tins. Let dates soak in warm water for at least 15 minutes.
In a high speed blender (Vitamix preferred), blend dates and water on high until pureed smooth. Add in oat flour, cinnamon, and baking powder and mix until smooth. Add about 2 tbsp of batter into each muffin tin, then press 1/4 of the No Cow Bar into each. Spoon batter over the top to cover up the bar, repeat with all 4 muffins. Top each muffin with chocolate chips.
Bake for 20 minutes. Remove from oven and let cool completely before removing from muffin pan.