Preheat the oven to 350 degrees and in a large mixing bowl combine brown sugar, eggs, butter, vanilla, peanut butter, and stir until light and fluffy.

In another medium size bowl mix together flour, baking powder, baking soda, and then pour into the bowl of wet ingredients and stir, until a creamy cake-like batter has formed.

Pour into a 9x11 baking dish and bake for 25-30 minutes. Remove from the oven and let cool for 15 minutes while you begin to mix up the chocolate pudding.

In a large bowl combine pudding mix and milk and stir until a thick pudding has formed, let sit in the fridge until ready to use.

Take the end of a wooden spoon and poke 12 holes in your peanut butter cake and then pour the chocolate pudding in each of the holes.

Top with vanilla frosting and swirl the vanilla frosting with any leftover chocolate pudding.

Top with Reece's pieces candy and a drizzle of chocolate syrup.

Cut into slices and Enjoy.