Preheat your oven to 350°F (175°C) and grease the baking dish. Olivia always reminds me, “Don’t forget the corners, Mom!”
In a large bowl, combine [cake mix], [pumpkin puree], [brown sugar], [cinnamon], [ginger], and [nutmeg] until blended.
Add [water], [oil], and [eggs]. Mix until smooth. My little helper always wants to crack the eggs—messy but priceless.
Pour batter into pan and bake 30–35 minutes until a toothpick comes out clean.
Let cool 10 minutes, then poke holes all over with the wooden spoon handle. Olivia calls these “caramel tunnels.”
Mix [sweetened condensed milk] with ½ cup [caramel sauce] and pour slowly over warm cake.
Refrigerate at least 2 hours (overnight is best). This is the hardest waiting test of all.
Spread [Cool Whip] evenly over the top.
Top with [toffee bits] and drizzle the remaining [caramel sauce] generously.