To Die For Snickers Bar Cake

It's almost been a year since I made this crazy decadent Snicker's bar cake for my hubby's birthday. I lost it's photos among the craziness that  followed two weeks later-the birth of my youngest son. Sometimes I feel like that newborn phase creates a mayhem that no one who hasn't been through it understands. For me that usually lasts the first year after baby is born. I'm coming out of the fog, people! Paddy is almost one, and while I still don't get any more than two hours sleep in a row max, I'm seeing the light at the end of the tunnel (through droopy eyes.)
Baby experience or not, you may have a "food baby" after eating this cake, which is just a giant replication of your good old Snicker's Bar. It is seriously one of the richest most decadent things I have ever eaten, and I can't believe that my husband and I tackled this thing on our own. This is really the type of cake you could have at a party, it goes a long way because you cant eat too much at one sitting.
If you're not throwing a party, you could consider cutting this in half and freezing a portion. I had to feed half of this to the birds in the end because it took us that long to work our way through it that the custard began to go bad-it was such a shame I had not thought to freeze part of it!
It's insanely impressive in appearance and in taste, with decadent layers of Snickers, chocolate ganache, caramel, peanut butter custard, chocolate custard and biscuit. To die for!

SNICKERS BAR CAKE (Heavily adapted from Baker's Royale)

2 packets of rectangle Arnott's Milk Coffee Biscuits
12-14 mini sized snickers bars, chopped

Pudding:
2/3 cup corn flour (corn starch)
1 cup granulated sugar
pinch salt
6 cups cold whole milk
1 tbsp vanilla extract
3/4 cup dark chocolate, chopped
3/4 cup smooth peanut butter

Ganache Pouring Sauce:
2/3 cups dark chocolate
1 tbsp heavy cream
4 tbsp icing sugar (powdered sugar)
4-5 tbsp warm water

Caramel Sauce:
2 tbsp honey
2 tbsp butter
1/2 cup brown sugar

To make the pudding and assemble the main:
In a large heat proof bowl, place the corn flour, sugar, salt and milk. Beat with electric beaters until well combined. Transfer to a heavy based saucepan. Over a very low heat, stir continuously until thick enough to coat the back of the spoon and leave ribbons when drizzled on itself.
Add vanilla and stir through to combine. Divide the mixture in half. Add the chocolate to one half, and the peanut butter to the other half. Stir both separately to combine thoroughly. Line a 8x8 pan or two 4x8 loaf tins with grease-proof paper, with the sides of the paper hanging over the edges for easy removal. Line the bottom with a layer of the biscuits laid side by side, breaking any biscuits that don't fit to make a good base. Spread a thin layer of the chocolate pudding over this biscuit base. Make the second layer of biscuit over this. Spread with a layer of the peanut butter pudding. Continue until the pudding is used up, and finish the top with the final biscuit layer. Cover in plastic wrap and place in the freezer for 3-4 hours. Half an hour before removal make the ganache pouring layer.

To make Ganache Pouring Sauce:
Place heavy cream and chocolate in a bowl over another bowl of hot water. Let sit for 5 minutes before stirring through until smooth. Add the powdered sugar and mix until until smooth. Add the water a tablespoon at a time until pouring consistency is reached.
Remove the cake from the freezer. Pull the paper sides to release the cake from the tin. Place on a serving platter. Pour the ganache over the top biscuit layer to cover. Sprinkle with the chopped snickers bars. Then make the caramel sauce to finish the cake off.

To make the caramel sauce:
Place honey, butter and sugar in a small saucepan over a low flame. Stir as the butter melts, continuing until the mixture boils. Cool for a minute or two before quickly drizzling over the top of the cake (this dries quickly in the pot, so make haste)
You can return the cake to the freezer to firm up before cutting, or serve straight away. Semi freezing is advised for nice neat cuts.