Mash the bananas

• Mash the ripe bananas in a bowl until smooth.

Mix the wet ingredients

• Add the vanilla, milk and eggs to the mashed banana.
• Stir just to incorporate everything together.

Make the oat flour

• Blend the oats until they form a fine flour.

Combine the dry ingredients

• Add the oat flour, baking soda, coconut sugar and a few cracks of salt to the wet mixture.
• Mix everything until a dough forms.

Fold in the chocolate

• Fold most of the milk chocolate chips and dark chocolate into the dough.
• Keep some chocolate aside for the top.

Bake the cookie skillet

• Spread the dough in a parchment-lined round pan or skillet.
• Scatter the reserved chocolate on top.
• Bake at 190 °C until a fork comes out clean.

Finish and serve

• Sprinkle flaky sea salt over the warm skillet.