INGREDIENTS
1 cup
all-purpose flour
1/4 cup
Dutch-processed cocoa powder (sifted)
1/2 tsp
baking soda
1/4 tsp
sea salt
1/2 cup
unsalted butter (room temperature)
1/2 cup
granulated sugar
1/2 cup
light brown sugar (packed)
1
large egg
1 tsp
vanilla
1/2 cup
Nutella
1 cup
semi-sweet chocolate chips (optional)
3/4 cup
hazelnuts (toasted, chopped)