If you have a soft spot for cozy, comforting desserts, you absolutely must try this Cinnamon Oatmeal Stuffed Apples with Vanilla Custard Sauce Recipe. Imagine tender baked apples bursting with a warm, cinnamon-spiced oatmeal and nut filling, perfectly complemented by a rich, silky vanilla custard sauce. It’s the kind of dessert that feels like a warm hug on a chilly day, bringing simple, wholesome ingredients together into a dish that’s both nostalgic and delightfully indulgent.

Ingredients You’ll Need
The magic of this Cinnamon Oatmeal Stuffed Apples with Vanilla Custard Sauce Recipe lies in its straightforward, pantry-friendly ingredients. Each one plays a key role in creating layers of flavor, texture, and that inviting aroma that fills your kitchen as it bakes.
- 4 medium apples (Honeycrisp or Fuji): Crisp and sweet apples that hold their shape while baking, giving you that perfect tender bite.
- 1/2 cup old-fashioned oats: Adds hearty texture and wholesome goodness to the filling.
- 1/4 cup chopped walnuts or pecans: For a delightful crunch and a subtle nutty flavor.
- 2 tablespoons brown sugar: Gives the filling a deep, caramel-like sweetness that balances the tartness of the apples.
- 1/2 teaspoon ground cinnamon: The star spice that brings warmth and classic fall flavor.
- 1/4 teaspoon ground nutmeg: A little spicy warmth that rounds out the cinnamon perfectly.
- 1 tablespoon unsalted butter (melted): Helps bind the filling and adds richness.
- Pinch of salt: Enhances all the flavors and balances the sweetness.
- For the Vanilla Custard Sauce:
- 1 cup whole milk: The creamy base for our luscious custard sauce.
- 2 large egg yolks: Creates richness and thickness for the custard.
- 2 tablespoons granulated sugar: Sweetens the sauce subtly without overpowering.
- 1/2 teaspoon vanilla extract: Infuses the custard with its signature comforting aroma.
- 1 teaspoon cornstarch: Helps thicken the custard to a silky smooth finish.
How to Make Cinnamon Oatmeal Stuffed Apples with Vanilla Custard Sauce Recipe
Step 1: Prepare the Apples
Start by preheating your oven to 375°F (190°C). Carefully core each apple, making a hollow well without cutting through the bottom—this will hold all that delicious oatmeal filling beautifully. Nestle the apples snugly in a baking dish, ready for the stuffing.
Step 2: Mix the Filling
In a bowl, combine the oats, chopped nuts, brown sugar, cinnamon, nutmeg, melted butter, and a pinch of salt. Stir everything thoroughly so that all the ingredients are evenly mixed and the oats are coated with butter and spices, promising warmth in every bite.
Step 3: Stuff the Apples
Spoon the oatmeal mixture into each apple, packing it tightly to ensure it fills every nook. This stuffing forms the heart of your dessert, balancing textures and flavors perfectly.
Step 4: Prepare for Baking
Add a splash of water (around 1/4 cup) to the bottom of the baking dish; this creates steam to keep the apples juicy. Cover the dish with foil and place it in the oven to bake for 25 to 30 minutes.
Step 5: Finish Baking
After the initial baking, remove the foil to allow the tops of the apples to get beautifully golden and slightly crisp. Bake for an additional 10 to 15 minutes until the apples are fork-tender and the filling is bubbling gently.
Step 6: Make the Vanilla Custard Sauce
While the apples bake, gently warm the milk in a saucepan over medium heat—don’t let it boil, just get it warm. In a separate bowl, whisk together egg yolks, sugar, and cornstarch until smooth. Slowly pour the warm milk into the egg mixture, whisking constantly to temper the eggs and prevent scrambling.
Return the mixture to the saucepan and cook over medium-low heat, stirring constantly until thick enough to coat the back of a spoon (about 3 to 5 minutes). Remove from heat and stir in vanilla extract for that signature flavor finish.
How to Serve Cinnamon Oatmeal Stuffed Apples with Vanilla Custard Sauce Recipe

Garnishes
A sprinkle of toasted nuts or a light dusting of cinnamon on top adds a lovely finishing touch and invites guests to dive right in. A fresh mint leaf provides a pop of color that’s visually stunning.
Side Dishes
Serve alongside a scoop of vanilla ice cream for an extra indulgent treat, or pair with a hot cup of spiced chai or coffee to complement this dessert’s warming spices beautifully.
Creative Ways to Present
For a charming rustic look, serve the apples individually in small ramekins filled with any leftover custard sauce, creating personalized bowls of comfort. Alternatively, drizzle a little maple syrup over the apples before baking for added sweetness and a glossy finish.
Make Ahead and Storage
Storing Leftovers
Place leftover apples and custard in airtight containers and refrigerate for up to 2 days. The flavors meld fantastically after resting and will taste just as delightful when reheated gently.
Freezing
While the baked apples are best enjoyed fresh, you can freeze the custard sauce separately in a freezer-safe container for up to one month. Thaw it overnight in the fridge before reheating.
Reheating
Rewarm the stuffed apples covered with foil in a 350°F oven for about 10-15 minutes to warm through without drying out. Heat the custard sauce gently on the stove or in a microwave at low power, stirring frequently to keep it smooth and creamy.
FAQs
Can I use different types of apples for this recipe?
Absolutely! While Honeycrisp or Fuji are ideal for their balance of sweetness and firmness, you can substitute with Granny Smith for a tangier twist or Gala for a sweeter option. Just make sure the apples are sturdy enough to hold the filling during baking.
Is there a dairy-free alternative for the custard sauce?
You can swap whole milk for almond, oat, or coconut milk and use a dairy-free butter substitute. Keep in mind the flavor and texture will vary slightly but will still be delicious.
Can I prepare the filling ahead of time?
Yes! Mix the oatmeal filling and keep it refrigerated for up to a day before you’re ready to stuff the apples. This makes the Cinnamon Oatmeal Stuffed Apples with Vanilla Custard Sauce Recipe even more convenient for busy schedules or special occasions.
What’s the best way to core the apples without cutting through the bottom?
A small paring knife or an apple corer works perfectly; just be sure to stop before reaching the base. This creates a little well that holds all the scrumptious filling without it spilling out during baking.
Can I make the custard sauce vegan?
Traditional custard relies on eggs, but you can create a vegan version using plant-based milk thickened with cornstarch and flavored with vanilla extract. Though the texture will differ, it remains a lovely complement to these stuffed apples.
Final Thoughts
This Cinnamon Oatmeal Stuffed Apples with Vanilla Custard Sauce Recipe is a heartwarming, feel-good dessert that’s perfect any time you crave something cozy yet sophisticated. It’s easy to make, celebrates simple ingredients, and delights every sense with flavor, aroma, and texture. I encourage you to give this recipe a try soon—you’ll find it quickly becomes one of your most beloved fall or winter treats.
