If needed, adjust oven rack and position in center of oven. Preheat oven to 350° Fahrenheit.
Lightly spray ramekins with neutral-flavored cooking spray, making sure to cover bottom and all sides of each dish. Place ramekins on baking pan and set aside.
Crack 2 large eggs directly into blender, then add 1 cup rolled oats, 2 medium bananas, 2 packed tablespoons brown sugar, 1 teaspoon pure vanilla extract, ½ teaspoon ground cinnamon, ¾ teaspoon fresh baking powder, and 1 pinch salt.
Blend ingredients together on high speed until mixture is completely smooth. Pause as needed to scrape down sides of blender with silicone spatula.
Once mixture is completely smooth, pour equal amounts of oat mixture into each ramekin. If desired, place preferred amount of chocolate chips on top of oat mixture in each ramekin.
Place baking pan with filled ramekins in preheated oven. Bake 10 minutes.
After 10 minutes, carefully insert toothpick into center of oat mixtures and remove immediately. If toothpick is clean or covered in very few crumbs when removed, remove baking pan from oven. Otherwise, return pan to oven and continue baking, checking doneness regularly, another 5 to 10 minutes or until blended oats are fully baked through.
Once toothpick indicates blended oats are fully baked through, carefully remove baking pan from oven and set aside. Allow ramekins to cool slightly, then serve baked oats as desired.