INGREDIENTS
1/2 cup
unsalted butter (softened)
3/4 cup
light brown sugar
1/4 cup
granulated sugar
1/2 cup
Nutella
2
eggs
1
additional egg yolk
1/4 cup
cocoa powder
2 cups
all-purpose flour
1 tsp
baking soda
1/2 tsp
salt
1 tsp
vanilla
1 cup
mini chocolate chips
sprinkles (optional)