Some mornings you just want something that feels like a warm hug on a plate, without any of the sugar crash that follows. This low calorie baked oatmeal with apple and cinnamon is exactly that kind of breakfast. It is hearty, satisfying, and genuinely nutritious, built from ingredients that actually do something good for your body. Every slice comes loaded with beta-glucan fibre from oats, natural sweetness from fresh apple, and a protein boost from Greek yogurt and egg whites that most traditional baked oatmeal recipes skip entirely.
What makes this recipe genuinely different from the ones you might have tried before is the way the ingredients work together to keep calories low without sacrificing anything in the taste department. Instead of loading up on butter and brown sugar, this version uses unsweetened applesauce to add moisture, a small drizzle of pure maple syrup for depth, and warm spices like cinnamon, nutmeg, and a pinch of cardamom that make the whole kitchen smell incredible while it bakes. The rolled oats soak up the liquid during baking and transform into a dense, sliceable texture that holds together beautifully, making it just as good eaten cold straight from the fridge as it is fresh from the oven.
Prepping this on a Sunday afternoon and having six portions ready for the week ahead is genuinely one of the smartest things you can do for your mornings. Each serving clocks in at roughly 225 calories, delivers around 12 grams of protein, and provides over 5 grams of fibre to keep you full well past mid-morning. The combination of slow-digesting oats and protein from the Greek yogurt means your blood sugar stays stable and hunger stays at bay, which is honestly what a good breakfast should be doing for you. You can eat it as-is, top it with a dollop of plain Greek yogurt, or add a small handful of walnuts for extra healthy fats if your calorie budget allows.
Apple variety matters more than you might think here. A crisp, slightly tart apple like Granny Smith or Braeburn holds its shape during baking and provides a pleasant bite in every mouthful, whereas sweeter varieties like Gala or Fuji tend to go very soft and almost disappear into the oats. Both work, but the contrast of texture you get from a firmer apple really does elevate the finished dish. Dice the apple into small, even pieces so it distributes well throughout the pan. The cinnamon you use also makes a difference. Ceylon cinnamon, sometimes called true cinnamon, is slightly milder and sweeter than the more common cassia variety, and it pairs beautifully with apple without overpowering the other spices. Either works perfectly well here, so use whatever you already have in your spice rack.
Ingredients
- 2 cups rolled oats (use certified gluten-free oats if needed, not instant oats)
- 1.5 tsp ground cinnamon (Ceylon cinnamon preferred but cassia works)
- 0.3 tsp ground nutmeg
- 0.1 tsp ground cardamom (optional but recommended)
- 1 tsp baking powder
- 0.3 tsp fine sea salt
- 1 large apple (peeled and finely diced, Granny Smith or Braeburn recommended)
- 1.5 cups unsweetened almond milk (or any low-calorie plant milk)
- 0.5 cup plain non-fat Greek yogurt (adds protein and creaminess)
- 0.5 cup unsweetened applesauce (replaces oil and adds natural sweetness)
- 3 large egg whites (or 2 whole eggs for richer texture)
- 2 tbsp pure maple syrup (use one tablespoon for a less sweet version)
- 1 tsp pure vanilla extract
- 1 tbsp ground flaxseed (adds omega-3s and extra fibre)
- 1 tsp coconut oil (for greasing the pan)
Instructions
- 1
Preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius). Lightly grease an 8x8 inch baking dish with the coconut oil and set aside.
A light, even coat of oil prevents sticking without adding significant calories to each serving.
- 2
In a large mixing bowl, combine the rolled oats, cinnamon, nutmeg, cardamom, baking powder, salt, and ground flaxseed. Stir everything together until evenly mixed.
Mixing the dry spices with the oats first ensures they distribute evenly rather than clumping in one spot.
- 3
In a separate medium bowl, whisk together the almond milk, Greek yogurt, applesauce, egg whites, maple syrup, and vanilla extract until smooth and well combined.
If your Greek yogurt is very thick, whisk it with a splash of almond milk first to loosen it before adding the rest.
- 4
Pour the wet ingredients into the dry oat mixture and stir until everything is thoroughly combined and no dry oats remain at the bottom of the bowl.
- 5
Fold in three quarters of the diced apple, reserving the remaining quarter for topping. Stir gently so the apple pieces stay intact.
Using most of the apple inside the mixture and some on top gives you a great visual as well as apple in every bite.
- 6
Pour the oat mixture into the prepared baking dish and spread it into an even layer with the back of a spoon. Scatter the reserved diced apple evenly across the top. Dust lightly with a pinch of extra cinnamon if you like.
- 7
Bake uncovered for 33 to 37 minutes, until the centre is set and no longer jiggly, and the edges are lightly golden. A toothpick inserted in the centre should come out clean.
Oven temperatures vary, so start checking at the 30 minute mark. The top should feel firm when gently pressed.
- 8
Remove from the oven and allow to cool in the dish for at least 10 minutes before slicing into 6 even squares. Serve warm with a dollop of plain Greek yogurt on top if desired.
Letting it rest allows the oatmeal to firm up further and makes slicing much cleaner.
Nutrition per serving
225kcal
Calories
12g
Protein
34g
Carbs
3g
Fat
5g
Fibre
10g
Sugar
185mg
Sodium
Pro Tips
- ✓
Use old-fashioned rolled oats, not quick oats or instant oats. Rolled oats give the baked oatmeal its dense, satisfying structure.
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Do not skip the Greek yogurt. It is a key source of protein in this recipe and it keeps the texture moist without adding fat.
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Taste your apple before using it. If it is very sweet, reduce the maple syrup to one tablespoon to keep sugar content low.
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Let the baked oatmeal cool fully before storing. Cutting into warm squares and then refrigerating can make them slightly gummy.
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For even more protein, stir two tablespoons of unflavoured or vanilla protein powder into the dry ingredients before adding the wet mixture. Add an extra splash of almond milk if the batter looks too thick.
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The texture firms up considerably as it cools, especially after refrigeration. If eating cold, this is almost like a sliceable oat bar, which is great for on-the-go mornings.
Frequently Asked Questions
Variations
- •
Peanut Butter Apple Baked Oatmeal
Stir two tablespoons of natural peanut butter into the wet ingredients before combining. This adds healthy fats and extra protein, bringing each serving to roughly 260 calories. The peanut butter and cinnamon apple combination is surprisingly addictive.
- •
Apple Raisin Baked Oatmeal
Fold in three tablespoons of raisins along with the apple pieces. Raisins add natural sweetness, allowing you to reduce the maple syrup to one teaspoon. They also contribute iron and additional fibre.
- •
Spiced Pear and Apple Baked Oatmeal
Replace half the apple with a ripe but firm pear, diced to the same size. Pear adds a slightly floral sweetness that pairs beautifully with the warm spices. Add an extra pinch of ginger powder to complement the pear.
- •
Chocolate Chip Apple Baked Oatmeal
Sprinkle two tablespoons of dark chocolate chips (70 percent cocoa or higher) over the top before baking. Dark chocolate adds antioxidants and turns this into more of a treat-style breakfast, while still keeping calories reasonable.
Substitutions
- •Egg whites → Flax eggs (Mix 1 tablespoon ground flaxseed with 3 tablespoons water per egg white. Let sit for 5 minutes until gel-like. Use 3 flax eggs total. This makes the recipe fully vegan.)
- •Plain non-fat Greek yogurt → Unsweetened soy or coconut yogurt (Choose a high-protein plant-based yogurt to maintain the protein content. Avoid flavoured varieties as they add unnecessary sugar.)
- •Almond milk → Oat milk, soy milk, or skimmed dairy milk (Any unsweetened milk works. Soy milk adds slightly more protein. Oat milk adds a naturally creamier texture. Use skimmed dairy milk if you prefer.)
- •Maple syrup → Honey or date syrup (Use the same quantity. Date syrup has a lower glycaemic index and a rich caramel-like flavour that works particularly well here.)
- •Ground flaxseed → Chia seeds (Use the same quantity. Chia seeds provide similar fibre and omega-3 benefits. They will create tiny pockets of texture rather than blending in invisibly like flaxseed does.)
- •Apple → Pear or peach (Use a firm variety in the same quantity. Pear works beautifully with cinnamon. Diced peach is lovely in summer months and cooks down slightly softer.)
🧊 Storage
Store cooled squares in an airtight container in the refrigerator for up to 5 days. Reheat individual portions in the microwave for 60 to 90 seconds, or in a preheated oven at 350 degrees Fahrenheit for 8 to 10 minutes. The texture is also enjoyable eaten cold directly from the fridge.
📅 Make Ahead
This recipe is ideal for meal prep. Bake the full batch on Sunday, slice into six portions, and store in the refrigerator for grab-and-go breakfasts throughout the week. You can also assemble the entire dish the night before, cover it tightly, and refrigerate unbaked. In the morning, allow it to sit at room temperature for 10 minutes while the oven preheats, then bake as directed. You may need to add 3 to 5 extra minutes to the bake time if starting from cold.
