Mix the Base: In small jars (or a big bowl), combine all the overnight oats ingredients, except for the maple syrup. So combine the rolled oats, plant-based milk, applesauce, cinnamon (or spice of your choice), and chia/flax seeds. Stir everything together until well mixed.
1/2 cup rolled oats, 1/2 cup (plant-based) milk, 1/4 cup applesauce unsweetened, 1/2 teaspoon cinnamon, 2 teaspoons chia seeds