Prepare Dry Ingredients: In your blender, combine the rolled oats, salt, baking powder, and cinnamon. Pulse until the oats are broken down into a flour-like texture. Transfer the mixture to a medium bowl and set aside.

Blend Wet Ingredients: In the now-empty blender, add the mashed banana, eggs, melted coconut oil, maple syrup or honey, spinach, and vanilla extract. Blend until smooth, ensuring the spinach is completely pureed.

Combine Wet and Dry Ingredients: Pour the oat mixture back into the blender and blend again to combine all the ingredients. You may need to scrape down the sides of the blender to ensure everything is well incorporated.

Preheat Waffle Iron: Heat up your waffle iron and lightly grease the plates with coconut oil if needed.

Cook the Waffles: Pour 1/2 cup of the waffle batter onto the preheated waffle iron. Depending on your waffle iron, cook for 4-6 minutes or until golden brown and crispy.

Keep Warm: If cooking multiple waffles, place the cooked waffles on a baking sheet in a 200°F oven to keep warm.

Serve: Enjoy the waffles warm, or let them cool and store them in the fridge or freezer for later use.