Soak the Dates: Cover 150 g (5.3 oz) of pitted dates with 350 ml (11.8 fl oz) of boiling water and leave to soak for 5 minutes.
Prepare the Bircher Muesli: In a large mixing bowl, combine 250 g (8.8 oz) of oats, 40 g (1.4 oz) of raisins, 20 g (0.7 oz) of chia seeds, 600 ml (20.3 fl oz) of oat milk, and a pinch of ground cinnamon. Stir well and leave to soak for at least 20 minutes, or overnight for best results.
Caramelise the Almonds: In a non-stick pan over medium heat, toast 50 g (1.8 oz) of flaked almonds until golden brown, about 4-6 minutes. Drizzle 2 tbsp (30 ml / 1 oz) of maple syrup over the almonds and stir to coat evenly. Continue cooking until the syrup caramelises and coats the almonds, then remove from heat.
Create Date Caramel: Drain the soaked dates and transfer them to a food processor. Add 100 ml (3.4 fl oz) of water, 2 tbsp (30 g / 1 oz) of almond butter, 1/2 tsp of vanilla extract, and a pinch of salt. Process until you achieve a smooth, caramel-like consistency.
Slice the Bananas: Peel and slice 2 bananas into coins.
Assemble the Oats: In clear glasses or jars, create the layers. Start with the date caramel, dividing it evenly between the glasses. Follow with a layer of the soaked Bircher muesli mixture. Add a layer of banana coins on top of the muesli. Spoon approximately 50 ml (1.7 fl oz) of coconut yoghurt over the bananas in each glass. Finish by sprinkling the caramelised almonds on top.
Serve and Enjoy: Serve the Banoffee Overnight Oats immediately, or refrigerate until ready to eat. The flavours will meld together beautifully when allowed to set overnight. Enjoy your healthful and delicious treat!