Combine:

1 1/2 c. flour
1/2 c. brown sugar

Cut in 1 stick butter.

Stir in 3/4 cup chopped nuts.

(Reserve 1 cup of mixture for topping.)

Press into 9 x 13 pan. Bake at 350 degrees for 15 minutes.

In large bowl beat 1 1/2 packages (12 ounces) cream cheese until fluffy.

Add:

1 cup sugar
1 cup canned pumpkin
3 eggs
2 1/2 tsp. cinnamon
1 1/2 tsp. allspice
1 tsp. pumpkin pie spice
1/2 tsp. ginger
1/2 tsp. nutmeg
2 tsp. vanilla

Pour over baked crust and top with reserved crumbs.

Bake 30 to 40 minutes.