In a medium sized pot over medium heat, whisk together the oats, apple, chia seeds, cinnamon, ginger, salt, milk, maple syrup, and applesauce until combined.
Cook over medium heat for about 9 to 15 minutes, stirring often. When the mixture thickens and the oats soften, it is ready.
Stir in the vanilla extract and lemon juice (if using).
Pour into a dish and serve with your desired toppings.