Pre-heat the oven to 375 degrees. Line a muffin tin with paper liners. Combine the softened dates, almond butter, coconut milk, avocado, egg, vanilla extract, vinegar, cocoa powder, salt and baking soda in the bowl of a food processor or a blender. Mix the ingredients well until the batter is smooth. Use an ice cream scoop or spoon to place batter into the muffin tray.

Sprinkle the top of each muffin with chocolate chips, if using. Bake in the oven for 15-18 minutes or until a wooden skewer placed into the middle of a muffin comes out clean. Remove the tray from the oven and let the muffins cool. The muffins can be stored in an airtight container.