Preheat the Oven – Set the oven to 350°F (175°C) and grease a 9x13-inch baking dish.
Mix the Pecan Layer – In a bowl, whisk together eggs, brown sugar, caramel topping, salted caramel topping, and melted butter. Stir in the pecan halves until well coated. Pour the mixture into the baking dish.
Add the Cake Mix – Evenly sprinkle the butter pecan cake mix over the pecan mixture.
Drizzle with Butter – Pour the melted butter over the top, making sure to cover as much of the dry cake mix as possible.
Bake to Perfection – Bake for 40–45 minutes, or until the top is golden brown and bubbly.
Cool & Serve – Let the cake cool slightly before slicing. Serve warm, optionally with vanilla ice cream or whipped cream.