Stay-Fresh Butterscotch Bars

Ingredients

• 0.5 teaspoon double-acting baking powder 
• 0.3 teaspoon baking soda 
• 1 large eggs 
• 4.8 oz flour all-purpose
• 0.3 cup liquid glucose 
• 0.5  scant teaspoon kosher salt - use half if using butter salted (Morton)
• 0.8 cups brown sugar light packed
• 0.3 cup pecans toasted coarsely chopped
• 0.3 cup butter unsalted
• 0.5 teaspoon vanilla extract 

Equipment

• frying pan
• sauce pan
• oven
• mixing bowl
• wire rack
• hand mixer
• aluminum foil

Directions

1. Preheat oven to 325°F and line an 8 inch square metal pan with aluminum foil. Grease foil and set pan aside.Sift or stir together flour, baking powder, baking soda and salt; Set aside.Melt butter over medium heat in a small saucepan. Cook just until it starts to brown, then remove from heat and transfer to a medium size mixing bowl.
2. Let cool slightly.
3. Add brown sugar, glucose and vanilla extract. Beat with a hand-held electric mixer on medium speed until combined.
4. Add the egg and beat on high speed for about 3 minutes or until the egg is fully incorporated and the batter is lighter in color and texture. By hand, stir in the flour mixture and nuts;
5. Spread in prepared pan (damp fingertips help).
6. Bake for 30 minutes until top is firm. Cool on wire rack.
7. Cut into bars.