Preheat your oven to 425°F. Lightly grease an 8X8 baking dish or line it with parchment paper
In a large bowl, whisk together the flour, sugar, baking powder, cinnamon, nutmeg and salt.
In a small bowl, combine flax seeds and water, stir together well and set aside for 5 minutes.
In small bowl, whisk together the milk, flax seed mixture, melted butter, maple syrup, and vanilla extract until well combined.
Pour the wet ingredients into the dry ingredients and stir until just combined. Be careful not to overmix; a few lumps are okay.
Allow the batter to sit for 5-10 minutes
Pour the mixture into the prepared pan spreading it out evenly with a spatula.
Sprinkle granola evenly over the top, then the brown sugar on top of the granola
Bake in the preheated oven for 20 minutes or until the pancake is puffed up and golden brown around the edges.
Remove from the oven and let it cool before slicing into squares