INGREDIENTS
For the Cookie Base:
1 1/2 cups
all purpose flour
1 tsp
baking powder
1/2 tsp
salt
1 1/2 cups
packed (10.5 oz) light brown sugar
12
Tb unsalted butter, melted and cooled
2
large eggs
1 1/2 tsp
vanilla extract
1
bag semisweet chocolate chips
1
package Oreo Cookies
For the Brownie Layer:
1/3 cup
Dutch-processed cocoa
1 1/2 tsp
instant espresso (optional)
1/2 cup
plus 2 tablespoons boiling water
2 oz
unsweetened chocolate, finely chopped
4 tbsp
unsalted butter, melted
1/2 cup
plus 2 tablespoons vegetable oil
2
large eggs
2
large egg yolks
2 tsp
vanilla extract
2 1/2 cups
sugar
1 3/4 cups
unbleached all-purpose flour
3/4 tsp
table salt