Directions

for the blondies:

1. Preheat the oven to 350 degrees. Butter or PAM the bottom of a 13 x 9 baking pan.
2. In a bowl with an electric mixer, beat butter and sugar until smooth and creamy.
3. Add eggs and vanilla, mix until fully incorporated.
4. In a separate bowl, whisk together flour, baking soda, and salt. Once mixed, add to butter and sugar mixture on low speed until just combined.
5. Stir in chocolate chips with a rubber spatula and spread batter evenly in the pan.
6. Bake the blondies 25 to 30 minutes, or until the center is no longer runny when tested with a wooden skewer.
   

for the topping:

1. While the blondies are baking, make the topping.
2. In a small saucepan, heat the butter and milk over medium heat until the butter is melted.
3. Once melted, stir in powdered sugar and brown sugar. Mix until the sugars are melted.
4. Increase heat to medium-high and let simmer until it thickens. (About 5 minutes)
5. Once the blodnies are out of the oven, use a wooden skewer or fork to poke holes in the blondies.
6. Pour topping over the blondies and then sprinkle toffee pieces on top.