Now, let’s work on your filling. For that, you’re going to need another mixing bowl. In this one, beat together your brown sugar, corn syrup, vanilla extract, and that reserved cake mix from before.
And really mix everything together here as best you can, as you’ll want everything to be fully incorporated with one another before moving on.
When you’re happy with how everything is looking, you can then add in your eggs, but again, don’t beat them up too rapidly. Go at a low and slow pace until they are barely combined with every other ingredient. No need to go crazy here.
You will then take these contents, and strategically pour them over that previously-made crust of yours. You can also top off the contents with a healthy smattering of pecans, as well.
Then, toss that entire thing into the oven for 25-30 minutes, until it fully sets. And, when it does, remove it from the oven, and place it on a handy-dandy wire rack to fully cool down.
After that, take this entire batch, and place it in the fridge for 15 minutes, at the very least, so they can firm up a touch.
At that point, carefully remove them from their pan, get rid of that pesky aluminum foil, and proceed to cut them into equally-sized bars for snacking.