INGREDIENTS
1
bar semi-sweet chocolate1
1/2
cup (115g; 1 stick) unsalted butter
3/4 cup
granulated sugar
2
large eggs, at room temperature
1 tsp
pure vanilla extract
1/3 cup
sour cream or plain yogurt, at room temperature
1/2 cup
all-purpose flour
1/3 cup
unsweetened natural cocoa powder2
1/2 tsp
baking soda
1/4 tsp
salt
1
heaping cup (180-200g) semi-sweet or dark chocolate chips (mini size works too!)