Now this was the ultimate showstopper!

1 cup pecans, chopped
1/2 cup unsalted butter
1 cup brown sugar, packed
1 box yellow cake mix
1 cup water
1/3 cup vegetable oil
3 large eggs

Preheat your oven to 350°F (175°C).

In a saucepan, melt the butter over medium heat. Stir in the brown sugar until smooth and combined.

Pour the butter and sugar mixture into the bottom of a greased Bundt pan. Sprinkle the chopped pecans evenly over the mixture.

In a large mixing bowl, prepare the cake mix according to the package instructions, using the water, oil, and eggs.

Pour the cake batter over the pecan mixture in the Bundt pan.

Bake for 45-50 minutes, or until a toothpick inserted into the center comes out clean.

Allow the cake to cool in the pan for about 10 minutes, then carefully invert it onto a serving plate.