01 -
Preheat the oven to 175°C. Grease a 23 x 33 cm rectangular cake pan.
02 -
In a large mixing bowl, combine yellow cake mix, peach gelatin powder, eggs, and oil. Beat thoroughly until smooth.
03 -
Cut frozen peach slices into bite-sized pieces. Gently fold them into the batter using a sturdy wooden spoon.
04 -
Spread the batter evenly in the prepared pan. Bake for 40–45 minutes at 175°C, or until a toothpick inserted in the center comes out with a few moist crumbs. The edges should be deep golden brown.
05 -
Place the pan on a wire rack and allow the cake to cool completely before frosting.
06 -
In a medium saucepan (approximately 2 liters), combine butter, brown sugar, and heavy cream. Stir over medium-high heat until the mixture comes to a gentle boil. Once boiling, cook for 1 minute, stirring constantly.
07 -
Remove from heat and incorporate vanilla extract. Prepare an ice bath in a larger container. Place the saucepan in the ice bath, being careful not to let water enter the frosting. Allow to cool, scraping the sides occasionally, until the frosting thickens to room temperature.
08 -
Using a hand mixer, beat the cooled frosting for 3–5 minutes until thick but pourable.
09 -
Spread the frosting evenly over the cooled cake. Slice and serve.