Pre-heat oven to 350 degrees F

In a mixing bowl, mix up the peanut butter, flour, baking powder and eggs.

Grease a baking tray and line it up with parchment paper – sides and bottom.

Pour mixture into the bowl and press it down uniformly.

Bake in oven at 350 degrees F for about 30 minutes.

Take out of the oven and let it cool for 20 minutes before cutting