Nutella Swirl Brownie & Sugar Cookie Tart

INGREDIENTS

9-inch pie crust (pre-made or use your favorite recipe)

1/2 cup

unsalted butter, cold

1/2 cup

granulated sugar

large egg

1 tsp

vanilla extract

1 1/2 cups

all-purpose flour

1 tsp

baking powder

1/4 tsp

salt

1/3 cup

all-purpose flour

1/4 cup

dark or dutch process cocoa powder

1/2 tsp

instant espresso powder

1/4 tsp

salt

1/8 tsp

baking soda

1/4 cup

unsalted butter, melted

1/4 cup

granulated sugar

1/4 cup

brown sugar

large egg

1/2 tsp

vanilla extract

1/4 cup

chocolate hazelnut spread (like Nutella)

flake sea salt (such as Maldon), for sprinkling

toffee bits (optional, for sprinkling)