Chocolate Chip Cookie Dough Sandwiches

INGREDIENTS

2 cups

all-purpose flour (measured correctly)

2 tsp

cornstarch (aka cornflour)

1 tsp

baking soda

1/2 tsp

salt

3/4 cup

unsalted butter, softened to room temperature

3/4 cup

packed light brown sugar (or dark brown sugar)

1/4 cup

granulated sugar

large egg, at room temperature

2 tsp

vanilla extract

1 cup

mini chocolate chips

1/2 cup

unsalted butter, softened to room temperature

3/4 cup

packed light brown sugar (or dark brown sugar)

1 tsp

vanilla extract

1 cup

all-purpose flour (measured correctly)

1/2 tsp

salt

1/4

cup milk or cream

1 cup

mini chocolate chips