In a small bowl, whisk together flour, baking soda and salt. Set aside for later.
1 Cup All Purpose Flour, ¼ teaspoon Baking Soda, ½ teaspoon Salt
Add brown sugar and room temperature butter to a mixing bowl of a stand mixer. Using the paddle attachment cream together until light and fluffy (approximately 3 minutes), scraping side of bowl as needed. Note - a hand mixer may also be used
½ Cup Unsalted Butter, ½ Cup Brown Sugar
Add peanut butter to the mixing bowl. Mix until combined, scraping the side of bowl as needed.
½ Cup Peanut Butter
Add a room temperature egg to the mixing bowl. Mix until combined, scraping the side of bowl as needed.
1 Large Egg
Add flour/baking soda/salt to mixing bowl and mix on low speed until combined.
Press the dough evenly into the bottom and up the sides of a 9" pie pan. Use your hands, a dough tamper or the flat bottom of a glass dipped in flour.
Pierce bottom and sides of pie crust with a fork about 15 times. Note - this helps the crust stay flatter and bakes more uniformly across the bottom and sides.
Place pie crust in the refrigerator and heat oven to 350℉ (180℃). Note - chilling firms up the dough so it holds its shape better in the oven. Warm dough can slump, shrink, or slide down the sides of the pie pan.
Once oven has reached 350℉ (180℃), bake pie crust for 12 minutes.
Cool completely before adding pie filling.