Brown butter chocolate chip cookie

Elevated chocolate chip cookies with brown butter. Brown butter: 1. Melt 2 sticks butter in saucepan. 2. Cook until milk solids turn golden brown and smell nutty. 3. Cool completely. Dough: brown butter, both sugars, eggs, vanilla, flour, baking soda, salt, dark chocolate chunks. Technique: 1. Cream butter and sugars. 2. Add eggs one at a time. 3. Fold in dry ingredients. 4. Chill dough 24 hours. 5. Scoop large portions, add flaky salt on top. 6. Bake at 350°F until edges golden. Explain Maillard reaction in butter and cookie spread science.