Preheat the oven to 350 degrees F (175 degrees C).

Spray a 9x13 inch baking dish with non-stick baking spray.

In a large mixing bowl, combine the butter pecan cake mix, coconut pecan frosting, eggs, coconut oil, and water.

Mix well with a hand mixer or stand mixer until everything is combined.

Add the chopped pecans and mix again.

Pour the batter into the prepared baking pan.

Bake for 40 minutes, or until the top is golden brown and the cake pulls away from the sides.

Set aside to cool on a wire rack.

To make the praline topping, combine the butter and sweetened condensed milk in a small saucepan.

Stir until the butter is melted.

Add the pecans and mix well.

Pour the praline topping over the cooled cake.

Let cool slightly before serving.