INGREDIENTS
1 cup
butter
1 1/2 cups
dark brown sugar (packed)
1
large egg + 1 egg yolk
1 tbsp
vanilla extract
3 cups
all-purpose flour*
1 tsp
baking soda
3/4 tsp
kosher salt or scant 1/2 teaspoon table salt
1/2 cup
toffee bits
1 1/2 cups
semisweet chocolate chips