Toffee Apple Crumble Layer Cake

I love this toffee apple crumble recipe made by Great British Bake Off contestant Liam Charles.

Talking about the recipe he said: "It is pretty evident I am obsessed with apple crumble. This cake has four layers of light brown sugar sponges, apple compote filling, and squiggles of salted caramel. And a few clusters of crumble, you know, for texture, as they say."

Ingredients:

For the Sponge

1lb 10oz Unsalted butter (softened)

1lb 5oz Billington's Unrefined Golden Caster Sugar

5oz Billington's Unrefined Light Muscovado Sugar

12 Free range large eggs

1lb 10oz Self Raising Flour

0.5 tsp Baking powder

6fl oz Whole milk

0.5 tsp Nielsen-Massey Vanilla Extract

For the Crumble

8oz Allinson's Plain White Flour

5oz Billington's unrefined soft brown sugar

1 tsp Sea salt

5oz Unsalted butter (cold & cubed)

For the Cinnamon Buttercream

1lb 16oz Unsalted butter (softened)

4lb 5oz Silver Spoon Icing Sugar

2 tsp Ground cinnamon

6fl oz Whole milk

1.5 tsp Nielsen-Massey Vanilla Extract

For the Filling & Topping

1 jar Apple sauce

11fl oz Salted caramel

10 Apple crisps (optional)