Pre-heat the oven at 170°C and melt the butter and 100g chocolate together in the microwave or pan, set aside.
In a bowl, whisk together the sugar and eggs until light and fluffy. Then add in the melted butter and chocolate and whisk until combined.
Add in the salt and salted caramel extract and whisk.
Sift in the cocoa powder and plain flour and fold until combined.
In a lined 8x8 square baking pan, pour in half of the brownie batter mixture.
Drizzle on some salted caramel sauce and place on four sliced Snickers bars. Pour on the remaining brownie batter and place into the oven at 170°C for 30 mins.
Once the brownie has baked and cooled , pour on 100g melted chocolate and place on four sliced Snickers bars.
Refrigerate for at least 1 hour (overnight is preferable) and then slice into squares.
