Praline-Pumpkin Dessert

1 can (15 oz) pumpkin (not pumpkin pie mix)
1 can (12 oz) evaporated milk
3 eggs
1 c. sugar
4 tsp. pumpkin pie spice
1 pkg. golden vanilla cake mix
1 1/2 c. chopped pecans
3/4 c. butter
Whipped cream if desired

Heat oven to 350 degrees. Grease bottom and sides of 9x13 pan. Beat pumpkin, milk, eggs, sugar and 4 tsp. pumpkin pie spice in medium bowl with wire whisk until smooth. Pour into pan. Sprinkle dry cake mix over pumpkin mixture. Sprinkle with pecans. Pour melted butter evenly over top of dessert. Bake 50-60 minutes or until knife inserted in center comes out clean. Cool slightly. To serve, cut dessert into 4 rows by 3 rows. Serve warm or chilled with dollop of whipped cream. Store covered in refrigerator.