Preheat the oven to 325º Fahrenheit. Spray an 8x8 pan with cooking spray. Line the pan with parchment paper if you'd like to remove the bars easily.
In a small bowl, combine the flour and baking soda. Set aside.
In a large bowl, mix together the sugar and melted butter. Add the egg and vanilla. Stir until the mixture is completely combined and even.
Add the flour mixture, pecans and chocolate chips.
Mix just until combined, being careful not to overmix.
Spread this mixture in the prepared 8x8 pan.
Bake for 35 minutes until the cookies look done. The center should still be soft, but they should look set.
Cut into bars once they are cool.
Store in an airtight container at room temperature.
*You can use light brown sugar if desired, but we recommend dark brown sugar.*Be careful not to overbake the bars.*These are amazing with ice cream.The calories shown are based on the recipe being cut into 12 pieces, with 1 serving being 1 cookie bar. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information. The information in the nutrition box are calculated through a program and there is room for error. If you need an accurate count, I recommend running the ingredients through your favorite nutrition calculator.**