Preheat oven to 325 degrees. Spray an 8x8 baking pan with cooking spray.
In a bowl, whisk together the flour, baking powder and salt. Set aside 1/3 cup (for the second cake part).
In another bowl, whisk together the egg, sugar, oil and vanilla. Mix well.
Add in the flour mixture and the milk, alternately, scraping the sides of the bowl as needed.
Fold in 1 cup of chopped pecans.
Pour the batter into the prepared pan. Bake for 20 minutes.
Meanwhile, in a small bowl, whisk together the reserved 1/3 cup flour mixture, melted butter, egg, milk, sugar, corn syrup and chopped pecans. Mix well.
Pour this mixture as evenly as possible over the cake after it has baked for 20 minutes. It will sink towards the bottom....that's ok! Just trust the process.
Bake again for 45 minutes or until the center of the cake is set.
Serve the cake warm with vanilla ice cream and/or whipped cream.
The calories shown are based on the cake being cut into 9 pieces, with 1 serving being 1 slice of cake. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**