First brown the butter in a skillet for about 6 mins or till it starts foaming a bit at the top and shortly after turns a nice brownish-tan. Transfer into a heat resistant bowl and let the butter cool down back to solid state.
In the same skillet used to brown the butter, reduce 3 mashed bananas. Stir occasionally and let simmer until the liquid from the bananas has reduced, and the banana mash is slightly caramelized. Set aside and let cool
Once the browned butter is solid, mix together the butter, sugar and evaporated milk until it's a creamy consistency
Add the eggs, honey, reduces bananas, and cinnamon to the butter mixture and whisk it until everything is evenly incorporated
Mix together flour, salt, and baking soda
Add the dry flour mixture into the butter mixture, and fold them together until everything is incorporated
Fold in walnuts (optional)
Rest dough in fridge for 12 hours
Place generous spoonful of dough onto baking sheet
Bake in a 350 degree preheated oven for 12-15 minutes
Cool cookies for about 10 minutes (or not if your hungry a** can't wait 🤣😭)