INGREDIENTS
3/4 cup
all-purpose flour
1 tsp
baking powder
1/2 tsp
salt
1/2 cup
(1 stick/4 oz.) butter
3 oz
unsweetened chocolate
1/2 cup
packed brown sugar
1/2 cup
granulated sugar
2
large eggs
1
large egg yolk
1 tsp
pure vanilla extract
1/2 cup
semisweet chocolate chips
3/4 cup
(1½ sticks/12 oz.) butter, at room temperature
1/2 cup
unsweetened cocoa powder
1/2 tsp
salt
2 cups
powdered sugar, sifted
2 tbsp
milk
1 tsp
pure vanilla extract
scant ½ c. heavy cream
1/3 cup
Ovaltine (chocolate malt powder)