INGREDIENTS
2 sticks
unsalted butter
1 1/2 cups
or 187 grams) all-purpose flour
1 cup
or 127 grams) bread flour
1 tsp
baking soda
1 tsp
baking powder
1 tsp
fine sea salt
1/2 cup
granulated sugar
1 1/4 cups
packed dark brown sugar
2
large eggs plus 1 egg yolk, at room temperature
2 tsp
vanilla
2 cups
semi sweet chocolate chips
1 cup
English toffee bits, such as Heath