1-First Step: Preheat and Prep the Pan Heat oven to 350°F. Grease a 9×13-inch baking dish with butter or non-stick spray. This prevents sticking and ensures clean slices. Mise en place: measure all ingredients nearby. Open the pumpkin can and have eggs at room temp for smooth blending.

2-Second Step: Mix the Pumpkin Base Directly in the greased pan, combine 29 oz canned pumpkin puree, 12 oz evaporated milk, 3 eggs, 1 cup sugar, 1 tsp cinnamon, ½ tsp nutmeg, and ½ tsp salt. Whisk by hand until smooth, about 1-2 minutes. No lumps means even cooking. The mixture will be pourable and aromatic pure fall magic.

3-Third Step: Add the Dry Cake Mix Layer Sprinkle the entire 15 oz box of spice cake mix evenly over the pumpkin mixture. Do not stir! Use a spoon or fork to spread gently corner to corner. This dry layer soaks up moisture during baking, forming the cake top.

4-Fourth Step: Scatter the Nuts Chop 1 cup pecans if whole, then sprinkle them uniformly over the cake mix. They toast in the oven for crunch. Walnuts work too for variety. Press lightly if needed, but keep it loose.

5-Fifth Step: Drizzle the Melted Butter Melt 1 cup butter in microwave or stovetop. Pour slowly in a steady stream across the surface, aiming for full coverage. Tilt the pan to spread if spots show. The butter sinks in, crisping the top.

6-Sixth Step: Bake to Perfection Bake at 350°F for 55-65 minutes. Edges bubble and caramelize; center sets when jiggled lightly. Rotate pan halfway for even browning. If top browns too fast, tent with foil. Total time: 60 minutes average.

7-Final Step: Cool and Serve Cool on wire rack 20-30 minutes. The middle firms up. Slice into 12 squares. Serve warm with vanilla ice cream or our homemade whipped cream. Pairs great with coffee. Leftovers? See storage tips below.