
Add 1 1/2 peeled ripe plantains, the eggs, and milk to a blender. Blend until completely smooth and creamy, with no visible lumps.



Add the ground oats, honey, and baking powder to the blender. Pulse just until the batter is well combined, then pour it into a bowl.



Melt the butter in a large nonstick skillet over medium-low heat. Sprinkle in the brown sugar, then slice the remaining 1 1/2 plantains and arrange the slices in an even layer over the bottom of the pan.



Fold the chocolate chips into the batter. Reduce the heat to low, pour the batter evenly over the plantains, and cover the skillet with a lid.


Cook for 15 to 20 minutes, or until the edges are set and the top looks mostly firm. Gently loosen the cake with a spatula to check that the bottom is golden.


Carefully invert the cake onto a large plate, then slide it back into the skillet to cook the second side. Cook for 5 to 10 minutes more, until golden and fully cooked through.
Transfer the cake to a serving plate and let it cool for a few minutes before slicing. Serve warm.