INGREDIENTS
1/2 cup
all-purpose flour
2 tbsp
cocoa powder
1/4 tsp
baking soda
1/4 tsp
baking powder
1/8 tsp
salt
1/4 cup
+ 1 tablespoon (63g) granulated sugar
1/4 cup
sour cream or unsweetened yogurt (*)
1
egg white
2 tbsp
coffee or milk
2 tbsp
vegetable oil
1/4 tsp
vanilla extract
1/4 cup
chocolate chips (plus more for topping)