Oat and Caramel Chocolate Squares

Melt butter and leave to cool for a while.

Preheat oven to 175ºC (about 350ºF) and prepare a baking tin with grease-proof paper or foil.

Mix butter with brown sugar and vanilla sugar until well combined.

In a separate bowl, mix oats, flour and baking soda. Add to the wet ingredients and stir until well mixed.

Press half of the mixture into the baking tin, keeping the remainder to use later. Bake for around 10 minutes until the edges are starting to brown.

Remove from oven and spread caramel evenly over the top. Next, sprinkle chocolate over the caramel and lastly, cover with remaining oat mixture. Put back in the oven and bake for another 15 minutes or so, until it is just browning on top and caramel starts to bubble up a little.

Allow to cool completely and then place in the fridge for several hours (preferably overnight if you can). Slice into squares and enjoy!