Preheat oven to 350F. Lightly grease the bottom and sides of a 9x9 inch baking pan and set aside.
In a medium bowl, whisk 1 ¼ cups flour, ½ teaspoon baking powder, ¼ teaspoon baking soda, ¼ teaspoon salt and set aside.
In a large bowl, stir ½ cup melted butter and ¾ cup brown sugar until thick and smooth.
And the eggs to your sugar mixture and stir until incorporated.
Then add 1 teaspoon vanilla and ½ cup peanut butter and stir until smooth and well combined.
Add your flour mixture in 3 stages and gently fold. Do not over mix or your bars will turn out tough and crumbly. Little specks of flour here and there are OK.
Then gently fold in 1 cup salted peanuts.
Then again the ½ cup fig jam. Again, try not to overwork the batter to ensure soft and chewy bars. The peanuts and the jam don't need to be fully incorporated in the batter.
Transfer the batter to your prepared pan and spread evenly.
Bake for 15-20 minutes or until you see browning at the edges. Cool in the pan before cutting into squares.