Combine the flax meal and water in a small bowl to create a vegan egg. Allow this to rest for at least 10 minutes, stirring it occasionally to keep it from separating. Set aside.
Bring a small pot of water to a boil. Once it is boiling, add in your dates and cook them for 30 seconds. Then, drain the water and place the softened dates into a food processor or blender.
Add the flax egg, milk, banana, coconut oil, and vanilla extract to the blender as well. Blend until extremely smooth. Set aside.
To a medium-sized mixing bowl, whisk the oat flour, pumpkin pie spice, cinnamon, baking soda, and salt.
Scrape the wet mixture from the blender into the bowl of dry ingredients and stir until just combined.
Fold in the chopped pecans until evenly distributed throughout the batter.
Preheat the oven to 375 degrees Fahrenheit.
Generously grease the middle six spots of your muffin tin with coconut oil or vegan butter. Alternatively, you can use muffin liners with pan spray.
Evenly distribute the batter amongst the six greased spots and smooth the tops around with a spoon.
If desired, sprinkle a pinch of chopped pecans and rolled oats over each top. This not only makes them look prettier but adds a bit more texture and flavor!
Bake the muffins on the middle oven rack for 17 minutes, rotating the pan halfway through baking.
Allow the muffins to cool down slightly and serve with a swipe of butter on top!