Place 1-1/2 cups (375 mls) of the milk, the oats, sunflower seeds, almonds, chia seeds, sugar and salt in a medium saucepan over high heat and stir to combine.
Bring to the boil, reduce the heat to low and cook for 4 minutes, stirring ocassionally or until the oats are cooked through.
Add the remaining milk and stir to combine.
While the porridge is cooking, place the apples, brown sugar and half the lemon juice in a large non-stick frying pan over high heat. Cook the apples for 4-5 minutes, turning occasionally, or until golden and caramelised.
Remove from the heat, add the remaining lemon juice and stir to combine.
Top the porridge with the apples to serve.