Preheat your oven to 350°F (175°C). Grease a 13x9-inch baking dish with butter or line it with parchment paper.

In a mixing bowl, combine all-purpose flour, rolled oats, brown sugar, granulated sugar, baking soda, and salt. Mix well.

Cut in softened butter until the mixture becomes crumbly.

In a separate bowl, combine the creamy or chunky peanut butter with a touch of granulated sugar until smooth.

Press half of the oatmeal crumble into the bottom of your prepared baking pan. Spread the peanut butter fudge layer evenly over the crumble.

Sprinkle the remaining crumble on top and evenly sprinkle chocolate chips over the top, pressing them lightly into the mixture.

Bake for 25-30 minutes until golden brown and slightly jiggles in the middle.

Allow to cool completely in the pan on a wire rack before cutting into pieces.