Toffee bars

I'm sure many of you make a version of these cookies. As a kid we always had that Giant Hershey Bar in the house (my Dad's favorite dessert!). But spreading that bar on the cookie was difficult.  I use chocolate chips now...hm..I wonder why my mom never though of that?

1 cup butter ( 2 sticks)
1 cup light brown sugar
1 egg
1 tsp vanilla extract
1/2 cup finely chopped pecans
2 cups all purpose flour
1  12 ounce package semi-sweet chocolate chips


With an electric mixer, cream butter and sugar together.  Add the egg and vanilla and continue to cream until thoroughly incorporated.  Stir in the pecans and flour and spread mixture into a 9 x 13 sprayed baking pan.  Bake for 20 to 25 minutes at 350F.  Leaving the oven on, remove the pan and sprinkle the chocolate chips over the top.  Return to oven for 2 to 3 minutes until the chips begin to melt. With a knife or spatula, spread the chocolate evenly over the cookie.  Cool and then refrigerate for about an hour before cutting into squares.
These freeze well.