Preheat oven to 375°F (190°C).
Add moon beans and almond milk to a blender. Pulse the mixture until both ingredients are blended but the moong beans are not completely smooth (for texture). Alternatively, you can blend this until the moong beans are smooth
Pour this mix into a bowl and add the egg, and Greek yogurt into it and stir.
Fold in coconut flour, brown sugar/raw cane sugar, salt, flax meal, baking powder, and pumpkin spice.
Add muffin liners to a muffin pan, then divide the moong muffin batter among the muffin cups.
Make the topping by heating the coconut oil in a pan. Add the oats, brown sugar, and pumpkin spice to the pan and stir well. Then sprinkle over each muffin.
Place the muffin tray in the preheated oven and bake 23–25 minutes until tops are golden.
Let muffins cool at least 10 minutes before serving.