Preheat oven to 350 degrees F
Spray 13x9 baking dish with non-stick cooking spray
In a large bowl, combine eggs, pumpkin, evaporated milk, sugar, spice and salt until well combined
Pour pumpkin mixture into baking dish
Sprinkle with dry cake mix
Chop pecans and spread evenly over cake mix
Melt butter in microwave safe bowl and drizzle over nuts
Bake for 45-50 minutes or until a toothpick inserted in the center comes out clean
Serve warm or room temperature with whip cream or ice cream if desired
Store leftovers in airtight container in refrigerator