For Brownies:

1 c. butter
3/4 c. unsweetened cocoa powder
2 1/4 c. granulated sugar
1/2 tsp. salt
3 eggs
1 tsp. vanilla extract
1 1/4 c. all-purpose flour
1/2 tsp. baking powder
1/2 c. mini semi-sweet chocolate chips

Prepare 13×9″ baking pan by laying a piece of foil in the bottom and up the sides. Spray with cooking spray or butter the foil.

Melt 2 sticks of butter in a medium saucepan; add cocoa, stirring until smooth. Remove from heat and cool slightly. Add sugar, salt, eggs, and vanilla; beat with a spoon until combined. Add flour and baking powder; mix well. Stir in chocolate chips. Spread batter into pan. Bake at 350 degrees for 25 minutes. (I always remove my brownies from the oven when a toothpick inserted 1 inch from the side of the pan comes out clean or almost clean.) Allow brownies to cool completely before moving on to the next step.

For Cookie Dough Filling:

1 c. butter, softened
1 c. packed light brown sugar
1/2 c. granulated sugar
4 Tbsp. milk
2 tsp. vanilla extract
2 c. all-purpose flour
1 c. mini semi-sweet chocolate chips

Combine first 5 ingredients in a mixing bowl and cream together. Add flour and stir until combined. Stir in chocolate chips. Spread in an even layer on top of cooled brownies. Chill before adding chocolate glaze.

For Chocolate Glaze:

1 c. semi-sweet chocolate chips
1 Tbsp. Crisco shortening

Melt chocolate with shortening and stir until smooth. Spread over chilled cookie dough layer.