INGREDIENTS
1 stick
unsalted butter, melted
1 cup
dark brown sugar
1
large egg plus 1 egg yolk
1 tbsp
molasses, optional
1 tsp
vanilla
1/8 tsp
fine salt
1/2 cup
all-purpose flour
1/2 cup
bread flour
6 oz
semisweet chocolate, chopped into chunks
Flaky sea salt, for sprinkling