Preheat the oven to 375°. Lightly spray a 9 x 9" ceramic baking dish with cooking spray or coconut oil (my favorite) or line with parchment paper and set aside.
Arrange the banana slices in a single layer on the bottom of the ceramic dish. Sprinkle 1/4 tsp of the cinnamon, honey and cover with foil. Bake 15 minutes, until the bananas get soft (I didn't cook them until mushy though).
Meanwhile, in a medium bowl, combine the quinoa flakes (or oats), pepitas, 1 cup of milk, half of nuts, baking powder, remaining cinnamon, pumpkin pie spice, nutmeg and salt; stir together
In a separate bowl, whisk together the pumpkin, maple syrup, maple extract, maple syrup/sweetener, remaining 1/2 cup of milk, egg, and vanilla extract.
Remove the bananas from the oven, then spread the quinoa mixture over the bananas. Next, pour the pumpkin mixture over the quinoa, spreading to make sure to distribute the mixture as evenly as possible. Sprinkle the remaining nuts over the the top.
Bake for about 32-38 minutes (mine baked for 38), or until the top is golden brown and the pumpkin and quinoa has set. Garnish with nuts/seeds/yogurt if desired and serve!