Applesauce Peanut Butter Squares

• 1 egg
• 240 ml applesauce
• 200 gr granulated sugar
• 170 gr peanut butter
• 160 gr unbleaced all-purpose flour
• 55 gr butter
• 5 gr baking soda
• 1 gr cinnamon (ground)
• 1 gr nutmeg (ground)