Blondies - The UN-Chocolate 'Brownie'

Why I Love This Recipe
Deliciously buttery rich combination of pecans and brown sugar... If ya don't like "Brownies" they I urge you to try these.
Ingredients You'll Need
3/4 cup Unsalted Butter
1 1/2 cup Light Brown Sugar
1/2 cup Dark brown Sugar
2 Large eggs
1 large Egg Yolk
1 1/2 tsp Vanilla
2 tsp Baking Powder
1 1/4 cups AP Flour
1 tsp Kosher Salt
1 Cup Chopped Pecans
(optional) 1/4 cup Heath Toffee Chips
Directions
Line a 13x9 pan with parchment.
Preheat oven to 350 degrees
In a sauce pan, melt butter.
Stir in the brown sugars, stirring until "melted' and the mixture just begins to bubble (This is similar to making a Pecan pie)
Whisk eggs and yolks together with Vanilla.
Pour in the eggs in a steady stream, while whisking constantly to prevent scrambling.
In a small bowl, whisk flour, baking powder and salt.
Fold Flour into the egg mixture.
Fold in Pecans and toffee chips (if using)
Spread into the pan.
Bake 35-40 minutes (5 minutes less for dark pans)
Remove from oven and cool on a rack.
Lift via parchment and cut when cooled.