INGREDIENTS
2
large egg whites (1/4 cup)
1/3 cup
(packed) golden brown sugar
salt
1 1/2 cups
coarsely chopped walnuts
1 1/4 cups
mini semisweet chocolate chips, divided
2 cups
cake flour
1/2 tsp
salt
1/2 tsp
baking powder
1/2 tsp
baking soda
1 cup
plus 2 tablespoons sugar
1/2 cup
unsalted butter, room temperature
3
large eggs
3/4 cup
sour cream
topping
3/4 cup
powdered sugar
2 tbsp
sour cream
(I microwaved some dark chocolate chips in a baggie till melted, sniped off the tip and drizzled it over the cake.)