01 -
Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish with nonstick spray or butter.
02 -
In a large mixing bowl, combine sweetened condensed milk, brown sugar, eggs, and vanilla extract. Whisk until fully blended and smooth.
03 -
Fold pecan halves into the wet mixture until evenly incorporated.
04 -
Pour the mixture evenly into the prepared baking dish.
05 -
Evenly sprinkle the dry yellow cake mix over the entire filler layer, avoiding any mixing or stirring.
06 -
Drizzle melted butter evenly across the surface, ensuring as much dry cake mix is covered as possible.
07 -
Bake in the preheated oven for 45 to 50 minutes, or until the top is golden and filling is bubbling at the edges. Allow to cool slightly before serving.