Pecan Butterscotch Bars

I got this recipe from The Nate Burkus Show and started making these bars right away.  I tend to change recipes I get (improve?), so I'll add the "improvements" at the end.  This recipe is from Treats Truck in NYC.

PECAN BUTTERSCOTCH BARS
3 sticks Butter (1 1/2 cup)
4 cups Dark Brown Sugar
3 cups Flour
2 tsp. Salt
4 tsp. Vanilla
4 Eggs
4 tsp. Baking Powder
2 cups Pecans - chopped

In saucepan, combine butter and brown sugar.  Cook until bubbly.  Sift together flour, salt, baking powder.  Combine this with eggs, vanilla, sugar/butter mixture and half pecans.  Pour in greased cookie sheet or jelly roll pan.  Sprinkle other half of nuts on top.  Bake 350 degrees for 25 - 30 min.

Aimee's "Improvements"
*  Change nuts--walnuts, almonds, cashews, anything works
*  Add chocolate chips on top--milk, semi-sweet, white, butterscotch

Enjoy!