Chocolate Chip Cookie Pie

INGREDIENTS

1 1/4 cups

chocolate wafer cookie crumbs

1 oz

semisweet chocolate, finely chopped

3 tbsp

unsalted butter, cut into chunks

3/4 cup

unsalted butter, at room temperature

1 cup

packed light brown sugar

large egg plus 1 egg yolk, at room temperature

2 tsp

vanilla extract

2 cups

all-purpose flour

2 tsp

cornstarch

1 tsp

baking soda

3/4 tsp

salt

1/2 tsp

instant espresso powder (optional)

1 1/2 cups

semi-sweet chocolate chips

maldon flake sea salt, for topping

1/2 cup

unsalted butter, at room temperature

1/4 cup

cocoa powder, sifted

1 1/2 cups

powdered sugar, plus more as needed

2 tbsp

heavy cream, plus more as needed

salt

1/4 tsp

vanilla extract

sprinkles, for decoration