Line a 9x9 baking pan with parchment leaving enough parchment to overhang the pan.

In a stand mixer using the paddle attachment mix together the peanut butter, water, vanilla, sugar and egg until well combined.

Next add in the oats, dates, and walnuts and salt. Mix until well combined.

Pour mixture in the prepared baking pan.

With your hand spread and mash down mixture evenly in the pan.

Bake at 350F for 15 minutes.

Let the pan cool for 3 minutes.

Lift the baked mixture out of the pan by the parchment paper.

Transfer to a cutting board.

Cut into desired size bars.

Let cool on cutting board before storing in an air tight container.