INGREDIENTS
1/2 cup
unsalted butter
4 oz
plus 1/2 cup semi-sweet chocolate chips, divided use
1 1/2 oz
unsweetened chocolate, choppe
2
large eggs
1 1/2 tsp
pure vanilla extract
1/2 cup
granulated sugar
1/4 cup
plus 1 tablespoon all-purpose flour, divided use
1 tsp
baking powder
1/4 tsp
salt
1/2 cup
toffee bits