1. 1. Preheat the oven to 350°F (175°C) and grease a baking dish.

2. 2. In a mixing bowl, combine 1 cup of creamy peanut butter, 1 cup of all-purpose flour, 1/2 cup of confectioners sugar, and 1/2 cup of white sugar.

3. 3. Mix the ingredients until well combined and press the dough into the prepared baking dish.

4. 4. Bake in the preheated oven for 20-25 minutes, or until the edges are golden brown.

5. 5. Allow the cookie bars to cool before cutting into squares and serving.