Apple Crumble Overnight Oats (Printable)

Layered overnight oats with spiced apples, creamy oat base, and a crunchy walnut crumble topping.

# What You Need:

→ Oat Base

01 - 1 cup rolled oats
02 - 1 cup whole milk or plant-based milk
03 - 1/2 cup plain Greek yogurt
04 - 2 tablespoons chia seeds
05 - 2 tablespoons pure maple syrup or honey
06 - 1/2 teaspoon ground cinnamon
07 - 1/2 teaspoon pure vanilla extract

→ Apple Layer

08 - 1 medium apple, cored and diced
09 - 1 tablespoon fresh lemon juice
10 - 1/2 teaspoon ground cinnamon
11 - 1 tablespoon pure maple syrup or honey

→ Crumble Topping

12 - 1/4 cup rolled oats
13 - 2 tablespoons chopped walnuts or pecans
14 - 1 tablespoon unsalted butter or coconut oil, melted
15 - 1 tablespoon brown sugar
16 - 1/4 teaspoon ground cinnamon

# How-To:

01 - In a medium mixing bowl, combine the rolled oats, milk, Greek yogurt, chia seeds, maple syrup, cinnamon, and vanilla extract. Stir thoroughly until all ingredients are evenly incorporated and the mixture is well blended.
02 - In a separate small bowl, toss the diced apple with fresh lemon juice, ground cinnamon, and maple syrup. Gently fold until the apple pieces are evenly coated and begin to soften slightly.
03 - In another bowl, combine the rolled oats, chopped nuts, melted butter, brown sugar, and cinnamon. Use your fingers or a fork to work the mixture until it forms coarse, pea-sized crumbs.
04 - Divide the oat base evenly between two jars or airtight containers. Spoon the seasoned apple mixture over the oat layer in each jar, then sprinkle the crumble topping generously over the apples.
05 - Seal the jars or containers tightly with lids and refrigerate for a minimum of 6 to 8 hours, allowing the oats to absorb the liquid and the flavors to meld together.
06 - Enjoy straight from the refrigerator cold, or let sit at room temperature for 10 minutes. For a warmer option, microwave briefly in 30-second intervals until heated through to your liking.

# Expert Tips:

01 -
  • It tastes like apple pie for breakfast but sneaks in real nutrition without trying too hard.
  • You do all the work the night before and wake up to something that feels genuinely indulgent.
02 -
  • If you skip the lemon juice on the apples, they will turn an unappetizing brown by morning and the whole jar will look sad instead of beautiful.
  • Do not stir the crumble into the oats before refrigerating or you will lose all that wonderful texture contrast you worked to create.
03 -
  • Salt the crumble topping with a tiny pinch of flaky sea salt right before sealing the jars, because that whisper of salt transforms the whole thing from sweet to complex.
  • Use a mandoline to slice the apples into thin matchsticks instead of chunks if you want the fruit to almost dissolve into the oats by morning.