Brown the butter and preheat the oven

• Preheat the oven to 370 °F.
• Brown one stick of unsalted butter in a saucepan and let it cool.

Make the wet mixture

• Combine the room temperature butter, sugar and brown sugar.
• Add the cooled brown butter, vanilla, mashed ripe banana and salt.
• Mix until fluffy.

Mix the dry ingredients

• Combine the flour, baking powder and salt in a bowl.

Bring the dough together

• Add the dry ingredients to the wet mixture slowly, without overmixing.
• Fold in the chopped semi-sweet chocolate chips until combined.

Shape the cookies

• Line a baking tray with parchment paper.
• Scoop the dough into portions of about 2 tablespoons each.
• Tap the portions on the counter so they flatten.

Bake

• Bake the cookies until set.