In a small microwave-safe bowl, combine the chopped apple, 1 teaspoon maple syrup, and a pinch of cinnamon. Stir to coat evenly. Microwave for 30-60 seconds until the apples soften and resemble baked apples. Let cool and set aside 1/4 cup for topping.
In a mason jar or any dish with a lid, combine the oats, almond milk, yogurt, 2 teaspoons maple syrup, vanilla, and ½ teaspoon cinnamon. Add 1/4 cup of the prepared cinnamon apples to the mixture and stir well.
Cover the jar and give it a good shake to mix everything together.
Refrigerate for at least 8 hours or overnight to let the oats soften and absorb the flavors. If you're short on time, a quick 30-60 minutes will also work!
The next morning, check the consistency. If the oats are too thick, stir in an extra splash of almond milk or yogurt.
Top with the reserved cinnamon apples and your favorite toppings like nut butter or chopped nuts for crunch.