Preheat the oven to 350°F, and spray 3 (6 ounce) ramekins with non-stick cooking spray. Set the ramekins on a small baking sheet.
Add the oats, milk, banana, maple syrup, cocoa powder and vanilla to a blender and blend until slightly smooth but leave a little texture and thickness.
1 cup old-fashioned rolled oats, ¾ cup milk, 1 banana, 3 tablespoons pure maple syrup, 1 ½ tablespoons cocoa powder, 1 teaspoon pure vanilla extract
Add the egg, baking powder and salt and blend again until smooth, about 30 seconds.
1 egg, 1 teaspoon baking powder, ⅛ teaspoon salt
Pour evenly into the ramekins. Sprinkle the mixture in each of the ramekins evenly with chocolate chips.
½ cup chocolate chips
Bake for 35-40 minutes or until a toothpick inserted in the center comes out clean. Serve with a drizzle of melted peanut butter if desired.