Ingredients
Equipment
Method
Brown butter and mix base
- Brown the butter and cool completely to room temperature, so it returns to a spreadable, not greasy, texture.
- Beat the cooled browned butter with the brown sugar and sugar until smooth, then add the egg, extra yolk, vanilla, and mashed very ripe banana and mix until combined.
Add dry ingredients and chill
- Fold in the all-purpose flour, baking soda, cinnamon, nutmeg, and salt just until no dry streaks remain.
- Fold in the dark chocolate chips and white chocolate chips so pools of both stay visible in the dough.
- Chill the dough for at least 45 minutes to help it thicken for thick, crinkled cookies.
Scoop and bake
- Scoop the dough onto a sheet pan and bake at 375°F for 10–12 minutes, until the edges look set and the centers are slightly soft.
- Immediately press extra dark and white chocolate chips and flaky sea salt onto the warm cookie tops so they adhere and look bakery-finished.
Notes
Pro tip: cool the browned butter fully before mixing to prevent scrambling and to keep cookie centers thick. Store baked cookies airtight at room temperature for up to 3 days (or refrigerate up to 5 days); freeze baked cookies up to 2 months. For a lower-sugar option, you can replace the sugars with a 1:1 baking blend for brown sugar and granulated sugar (follow the package for substitution amounts).
