For the Brown Butter Chocolate Chip Cookie Layer
- 1/2 cup(115 g) unsalted butter
- 1/2 cupbrown sugar
- 1/4 cupgranulated sugar
- 1large egg
- 1 tspvanilla extract
- 1 1/4 cupsall-purpose flour
- 1/2 tspbaking soda
- 1/4 tspsalt
- 3/4 cupchocolate chips
For the Brownie Layer
- 1/2 cup(115 g) unsalted butter
- 4 oz(115 g) dark chocolate, chopped
- 3/4 cupgranulated sugar
- 2large eggs
- 1 tspvanilla extract
- 1/2 cupall-purpose flour
- 1/4 cupcocoa powder
- 1/4 tspsalt