INGREDIENTS
1 cup
semisweet chocolate chips
1 1/2 sticks
unsalted butter, cut into pieces
4 oz
unsweetened chocolate, chopped
1 1/4 cups
granulated sugar
1/2 cup
Nutella
3
large eggs plus 1 egg yolk
1 tsp
vanilla extract
3/4 cup
all-purpose flour
1/4 cup
unsweetened (25 grams) cocoa powder
1/4 tsp
fine sea salt