Date-nut Pumpkin Pie

• 2 eggs
• 1 sweetened whipped cream
• 375 gr pumpkin
• 240 ml evaporated milk
• 180 ml water
• 110 gr packed brown sugar
• 100 gr granulated sugar
• 65 gr packed brn
• 60 gr walnuts (chopped)
• 55 gr butter