INGREDIENTS
1
Egg plus 2 egg yolks, large
2 cups
All-purpose flour
1 cup
Brown sugar, light packed
1/4 cup
Cornstarch
1 cup
Granulated sugar
1/2 tsp
Salt
2 cups
Semi-sweet chocolate chips
2 tsp
Vanilla extract
2 sticks
Butter, unsalted
3/4 cup
Toffee bits