Sara Lee's Carrot Square Cake

• 2 eggs
• 1 1/2 orange extract
• 375 gr powdered sugar
• 200 gr sugar
• 160 gr all purpose flour
• 170 ml oil
• 130 gr carrots grate fine
• 120 gr walnuts well (chopped)
• 110 gr butter
• 170 ml cream cheese softened