Pumpkin-eggnog Cheesecake

• 20 gingersnaps
• 4 eggs
• 3 springform with nonstick cooking spray (pan)
• 1 from edge of cheesecake
• 1/2 up side of springform (inches pan)
• 475 gr packed pumpkin (solid)
• 240 gr prepared eggnog
• 450 ml cream cheese
• 150 gr sugar until soft peaks form
• 60 gr walnuts