Line a 9 x 13" sheet pan with raised edges with parchment paper
Place squares of almond brownie brittle on the tray, covering the bottom. Set aside.
In a heavy duty, thick bottomed pot, combine: sugar, butter, salt, sunflower lecithin, and water.
Cook on medium heat until all sugar has dissolved and butter has melted. Increase heat to high.
Cook until temperature reaches 308F. Immediately remove from heat.
Add whole almonds, stir briefly until combined.
Pour toffee directly on top of brownie brittle squares. Spread it into an even layer.
Top with dark chocolate. Let chocolate sit for two minutes before spreading.
Spread dark chocolate into an even layer on toffee.
Top with chopped almonds.
Cool completely. Break into pieces.
Store in an airtight container.