Add the milk, egg, whole grain flour, Himalayan salt, baking powder, and maple syrup to a blender. Blend until completely smooth. If the batter seems thick, add a small splash of water until it reaches a pourable consistency.
Heat a lightly greased nonstick 6-inch skillet over medium heat.
Pour about ¼ cup of batter into the skillet, swirling immediately to coat the bottom evenly.
Cook for about 1–2 minutes until lightly golden, then carefully flip and cook the other side. Repeat with the remaining batter.
In a small bowl, stir together the peanut butter, vanilla extract, and maple syrup until smooth and creamy.
In another bowl, whisk together the melted coconut oil, cacao powder, and maple syrup until silky.
Lay each crepe browned-side down on a clean surface.
Spread the peanut butter mixture down the center.
Place the banana near one edge and roll tightly into a neat log.
Drizzle with the homemade raw chocolate.
Sprinkle with chopped nuts and crushed goji berries if desired.
Slice and serve immediately. These Chocolate Peanut Butter Banana Roll-Ups are best enjoyed fresh while the crepes remain soft and tender.