Pumpkin Cheesecake Bars

1 (16-ounce) package white pound cake mix
3 large eggs
2 tablespoons butter, melted
4 teaspoons pumpkin pie spice, divided
1 (8-ounce) package cream cheese, softened
1 (14-ounce) can sweetened condensed milk
1 (16-ounce) can pumpkin
1/2 teaspoon salt
1 cup chopped walnuts or pecans
Preheat oven to 350 F. In a large mixing bowl on low speed, combine cake mix, 1 egg, butter and 2 teaspoons pumpkin pie spice until crumbly. Press into bottom of 9 x 13 x 2-inch baking pan. Set aside.
In a large mixing bowl, beat cream cheese until fluffy. Gradually beat in sweetened condensed milk, remaining 2 eggs, pumpkin, remaining 2 teaspoons pumpkin pie spice and salt. Mix well. Pour over crust, sprinkle nuts on top.
Bake 30- 35 minutes or until a knife inserted into the center comes out clean. Cool to room temperature, then chill in refrigerator. Cut into bars