Preheat the oven to 350 degrees F.
Make the brownies in the 9X13 pan based on the package instructions.
Bake for half of the time listed on the back of the box.
While brownies are baking, whisk together the corn syrup, brown sugar, eggs, vanilla, butter and salt until thoroughly combined.
Stir in the pecan halves.
Pour this pecan filling evenly over the half cooked brownies.
Finish baking the brownies with the toppings for 25-30 minutes until the filling is cooked through.
Allow for them cool completely.
Slice and enjoy!