Step 1

Preheat oven to 350 degrees F.

Step 2

Spray a 8x8 inch square pan with non-stick spray. I then line the pan with heavy duty foil and spray the foil. This will allow for easier removal.

Step 3

Combine melted butter and sugar in a bowl and whisk.

Step 4

Add egg and vanilla and stir to combine.

Step 5

Mix in peanut butter and stir until smooth.

Step 6

Add salt and flour and stir until combined.

Step 7

Pour into prepared pan.

Step 8

Bake 20 to 25 minutes until pick inserted in center comes out clean. Allow to cool before cutting.