If you want a breakfast you can make once and enjoy all week, these baked oats are it. Apple, cinnamon, and walnut baked oats are a wholesome, cozy, make-ahead breakfast: oats, grated apple, chia seeds, and crunchy walnuts baked together with warm cinnamon and a touch of honey into a soft, sliceable loaf. It tastes like apple pie meets a warm bowl of oatmeal, but it’s packed with fiber, healthy fats, and natural sweetness from the fruit. You bake it in one tin, slice it into portions, and keep it in the fridge or freezer for grab-and-go mornings. It’s the kind of simple, nourishing recipe that makes busy weekdays so much easier.
The beauty of baked oats is that they turn a regular bowl of oatmeal into something you can prep ahead and slice like a bar. The grated apple keeps it moist and naturally sweet, the chia seeds add fiber and help it hold together, and the walnuts bring crunch and richness. Warm with a little butter, drizzled with extra honey, or eaten cold straight from the fridge, it’s a satisfying, feel-good start to the day that comes together with almost no effort.
Why this works
A few simple ingredients and one easy method are what make this both delicious and practical, and they’re worth understanding.
The grated apple is doing a lot of quiet work. As it bakes, it softens into the oats, adding natural sweetness and moisture so the loaf stays soft and tender rather than dry. Grating it (rather than chopping) means the apple distributes evenly throughout and almost melts in, giving every slice that apple flavor without big chunks. It’s the main reason this needs so little added sweetener.
Chia seeds are the binder here. They absorb liquid and form a gel as they sit and bake, which helps hold the baked oats together into a sliceable loaf rather than a loose, crumbly mess. They also add a good dose of fiber and healthy omega-3 fats, boosting the nutrition of an already wholesome breakfast.
The oats and milk are the base, soaking up the liquid and baking into that soft, set, custardy-yet-hearty texture that makes baked oats so satisfying. And the warm flavors, cinnamon and a little honey, give it that comforting, apple-pie-like taste without much added sugar. The walnuts, scattered throughout, toast slightly as it bakes and add crunch and a nutty richness that contrasts beautifully with the soft oats.
Best of all, it’s genuinely a one-bowl, make-ahead recipe: stir everything together, pour into a tin, bake, and you’ve got a week of breakfasts.
What goes in
The ingredient list is short and wholesome.
You’ll need rolled oats, chia seeds, apples (grated), ground cinnamon, honey, walnut pieces, and your milk of choice.
A few notes. Use rolled oats for the best texture. Use sweet, firm apples (like Gala, Fuji, or Honeycrisp) and grate them, no need to peel unless you prefer to. Any milk works, dairy or plant-based, so use whatever you like (and use a plant milk plus maple syrup instead of honey to make it vegan). Adjust the honey to taste depending on how sweet your apples are. And feel free to swap the walnuts for pecans, or leave the nuts out for a nut-free version.
How to make it
Preheat your oven to 180°C (350°F).
In a large bowl, combine the oats, chia seeds, grated apple, cinnamon, honey, walnut pieces, and milk. Mix everything together well until evenly combined and the oats are coated in the liquid.
Line a baking dish or loaf tin with baking paper, leaving some overhang so you can lift it out later. Pour the oat mixture into the tin and smooth out the top so it’s even.
Bake for 40 to 45 minutes, until set and cooked through, the top should be golden and the center firm to the touch.
Remove it from the oven and let it cool, then slice it into 4 or 5 pieces. Serve warm or at room temperature, or chill and grab a slice whenever you need one.
Tips, serving, and storing
A few things help. Make sure the oats are fully moistened with the milk before baking so they cook evenly. Let the baked oats cool before slicing, since they firm up as they cool and slice much more cleanly that way. And line the tin with baking paper so you can lift the whole thing out easily.
A couple more. If you like a sweeter or more decadent breakfast, a handful of raisins or chopped dates stirred in, or a sprinkle of brown sugar on top before baking, is a nice touch. And a pinch of nutmeg or a splash of vanilla deepens the warm, apple-pie flavor. For extra crunch, scatter a few more walnuts over the top before it goes in the oven.
This is fantastic for breakfast meal prep, which is exactly what it’s made for. Slice it into portions and you’ve got ready breakfasts for the week. Enjoy a slice cold from the fridge, or warm it briefly in the microwave or a low oven and top it with a dollop of yogurt, a drizzle of honey or nut butter, a splash of milk, or some fresh fruit. It pairs especially well with a spoonful of Greek yogurt for extra protein, or with a hot coffee on a cool morning. It’s endlessly customizable at serving time.
For storing, keep the sliced baked oats in an airtight container in the fridge for up to about 5 days, perfect for the week ahead. They also freeze beautifully: wrap individual slices and freeze for up to 3 months, then thaw overnight in the fridge or reheat from frozen for an instant breakfast. Having a stash in the freezer means a wholesome breakfast is always ready.
This makes about 4 to 5 slices. Soft, warmly spiced, naturally sweet, and full of apple, oats, and walnuts, this baked oats recipe is a comforting, healthy breakfast you can feel great about, and once you’ve made it, you really will be glad to have a batch waiting in the fridge.
WP Tasty (Tasty Recipes Premium) field values
- Category: Breakfast
- Method: Baking
- Cuisine: American
- Diet: Vegetarian (use certified gluten-free oats to make it gluten-free; contains walnuts (tree nuts). Make it vegan with plant milk and maple syrup instead of honey.)
- Keywords: apple cinnamon baked oats, baked oats, apple walnut baked oatmeal, meal prep breakfast, healthy baked oats, baked oatmeal
- Serving Size: 1 slice (recipe makes 4 to 5)
- Calories: (leave blank. No nutrition data was provided. Generate values with Nutrifox before publishing rather than estimating.)
- Equipment: Mixing bowl, loaf tin or baking dish, baking paper
Apple, Cinnamon, and Walnut Baked Oats
Equipment
- Mixing Bowl
- Loaf tin or baking dish
- Baking paper
Ingredients
- 1 1/2 cups rolled oats
- 1/4 cup chia seeds
- 2 apples grated
- 2 tsp cinnamon
- 1 tbsp honey or maple syrup for vegan
- 1/2 cup walnut pieces
- 1 3/4 cups milk of choice dairy or plant-based
Instructions
- Preheat: Preheat the oven to 180°C (350°F).
- Mix: In a large bowl, combine the oats, chia seeds, grated apple, cinnamon, honey, walnut pieces, and milk. Mix well until evenly combined.
- Fill the Tin: Line a baking dish or loaf tin with baking paper. Pour in the oat mixture and smooth out the top.
- Bake: Bake 40 to 45 minutes, until set and cooked through (golden on top and firm in the center).
- Cool and Slice: Remove, let cool, and slice into 4 or 5 pieces. Serve warm or at room temperature, or chill. Store in the fridge in an airtight container, or freeze.
