Frozen Pumpkin Squares

My mom got this recipe from a friend last year and it was so delicious. It's perfect for the holidays coming up.

Frozen Pumpkin Squares

2 cups canned pumpkin
1 cup sugar
1 tsp. salt
1 tsp. cinnamon
1 tsp. nutmeg
1 cup chopped walnuts (optional)
1/2 gallon vanilla ice cream, softened
36 crushed gingersnap cookies
whipping cream

Combine pumpkin, sugar, salt, cinnamon and nutmeg; mix well and stir in nuts, if desired. Put softened ice cream into a chilled bowl and gently fold pumpkin mixture into ice cream. Line bottom of 9 x 13 glass pan with half of the crushed gingersnaps. Cover with half of the ice cream-pumpkin mixture. Repeat with remaining crushed gingersnaps and ice cream-pumpkin mixture. Freeze overnight. Cut into squares and serve with whipping cream.

When we made this last year my mom made it with "Firestone" brand gingersnaps and we both agreed that those gingersnaps had too strong of a flavor which overpowered everything else. She thought it was much better with the cookies her friend has used, but we don't know what kind those were. So this year we will be making it again, but buying a different brand of gingersnap cookies.