Low-Calorie Baked Apple Crumble
Apple crumble is one of the great British comfort desserts, and this low-calorie version delivers all the warmth and satisfaction of the classic at under 165 calories per serving. By using a modest amount of coconut oil, naturally sweet eating apples that need minimal added sugar, and a wholesome oat topping bound together with just a touch of maple syrup, this crumble keeps calories impressively low while delivering genuinely rich, satisfying flavour.
The secret to this recipe's success lies in choosing the right apples. Braeburn and Cox are ideal eating apples for baking, they hold their shape well during cooking, offer a beautiful balance of sweetness and acidity, and release just enough juice to create a luscious, saucy filling without becoming watery. Unlike cooking apples such as Bramleys, eating apples need very little added sweetener, which is a key reason this crumble stays so light on calories.
The oat topping is the heart of the dish. Rolled oats are tossed with melted coconut oil, maple syrup, cinnamon, and a pinch of sea salt, then scattered loosely over the apple filling. During baking, the oats toast beautifully in the oven, developing a deep golden colour and satisfying crunch that contrasts perfectly with the soft, cinnamon-spiced apple beneath. The key tip here: keep the topping loose rather than packed down, a gentle scatter rather than a pressed layer will give you a crunchier, more textured result.
From a nutritional standpoint, this crumble punches well above its weight. Rolled oats are an excellent source of beta-glucan, a soluble fibre that helps slow digestion, support a feeling of fullness, and contribute to healthy cholesterol levels. Combined with the natural fibre from the apple skins, if you prefer to leave them on for extra nutrition and a slightly more rustic texture, each serving delivers around 4g of fibre. The use of coconut oil rather than butter keeps this entirely dairy-free and vegan, while the maple syrup provides a more complex, caramel-like sweetness compared to refined white sugar.
One of the things that makes this recipe so practical is its versatility. It works beautifully as a weeknight dessert served warm straight from the oven, but it also reheats wonderfully the next day, arguably tasting even better as the filling thickens and deepens overnight. You can assemble the whole dish up to 24 hours ahead and keep it covered in the fridge unbaked, simply bring it to room temperature for 20 minutes before sliding it into the oven.
For serving, a dollop of low-fat Greek yogurt is the perfect accompaniment, creamy, cooling, and adding a hit of protein to make this a genuinely balanced dessert. If you're keeping it fully vegan, coconut yogurt works beautifully. A small scoop of vanilla ice cream or a drizzle of cold oat milk are equally delicious options.
This recipe is also endlessly customisable. Stir a handful of frozen blackberries or raspberries into the apple filling for a tart, vibrant twist. Add a tablespoon of chopped walnuts or pecans to the topping for extra crunch and healthy fats. Swap the apples for pears and add ground ginger for a warming autumn variation. Whatever direction you take it, the base method remains foolproof.
Whether you're looking for a lighter way to enjoy a classic British pudding, a crowd-pleasing dessert that happens to be vegan and dairy-free, or simply a cosy treat that won't derail your health goals, this low-calorie baked apple crumble is the recipe to reach for every time.
Ingredients
- 6 medium eating apples (Braeburn or Cox), peeled, cored, cubed (Braeburn and Cox hold their shape well and need less added sugar than cooking apples. Aim for roughly 2cm cubes for even cooking.)
- 2 tbsp pure maple syrup (for filling) (Adjust to taste depending on apple sweetness — ripe, in-season apples may need only 1 tbsp.)
- 1 tsp ground cinnamon (for filling) (Ceylon cinnamon has a more delicate, complex flavour than standard cassia cinnamon if you want to upgrade.)
- ¼ tsp ground nutmeg (Freshly grated nutmeg gives a noticeably more fragrant result than pre-ground.)
- 1 tbsp fresh lemon juice (Prevents browning and brightens the apple flavour. Bottled lemon juice works but fresh is better.)
- 1 cups rolled oats (Use old-fashioned rolled oats, not quick oats — quick oats turn mushy rather than crunchy. Use certified GF oats if needed.)
- 2 tbsp coconut oil, melted (Refined coconut oil has no coconut flavour if you prefer a neutral taste. Unrefined adds a subtle coconut note.)
- 2 tbsp pure maple syrup (for topping) (Binds the oats and adds caramel sweetness. Grade A dark maple syrup gives the richest flavour.)
- ½ tsp ground cinnamon (for topping)
- 1 pinch sea salt (Don't skip this — salt balances the sweetness and makes the topping taste more complex.)
Instructions
- 1
Preheat oven to 180°C (160°C fan) / 350°F.
Make sure your oven is fully preheated before the crumble goes in — starting in a cold oven leads to uneven cooking and a soggy topping.
- 2
Toss apple chunks with maple syrup, cinnamon, nutmeg, and lemon juice in a 20x25cm baking dish.
Use a dish where apple fills it to within 1cm of the top for the best filling-to-topping ratio. Toss the apples well so every piece is coated in cinnamon and syrup.
- 3
Combine oats, coconut oil, maple syrup, cinnamon, and salt in a bowl until oats are coated and mixture clumps slightly.
The mixture should clump slightly when you squeeze a handful — if it seems dry and won't hold together at all, add 1 tsp more melted coconut oil.
- 4
Spread oat topping evenly over the apple filling, pressing down very lightly.
Scatter the topping loosely rather than pressing it down firmly — a loose, airy layer bakes crunchier than a densely packed one.
- 5
Bake 32–38 minutes until topping is golden and apple filling is bubbling at the edges.
Cover loosely with foil for the first 20 minutes if your oven runs hot, then remove to let the topping crisp up and turn golden for the final 12–15 minutes.
- 6
Cool 10 minutes before serving warm with Greek yogurt.
Resting allows the apple juices to thicken slightly so the filling isn't watery when served.
Nutrition per serving
165kcal
Calories
3g
Protein
30g
Carbs
5g
Fat
4g
Fibre
16g
Sugar
65mg
Sodium
Pro Tips
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Use a mix of apple varieties, Braeburn and Cox balance sweetness and acidity perfectly. Avoid Red Delicious, which becomes overly mushy when baked.
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Cut apple chunks to roughly 2cm, uniform pieces cook evenly and give you a filling with some tender chunks rather than apple sauce.
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Do not use quick oats in the topping. Old-fashioned rolled oats are essential for achieving a crunchy, golden crumble rather than a soft, mushy one.
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The crumble is done when the filling is visibly bubbling around the edges and the topping is deep golden brown, not just pale gold. Don't pull it early.
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Add 2 tbsp roughly chopped walnuts or pecans to the oat topping before baking for extra crunch, texture, and healthy fats with minimal calorie impact.
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For a fruit-forward twist, stir a generous handful of frozen blackberries or raspberries directly into the apple filling, no need to defrost them first. They'll add beautiful colour and a pleasant tartness.
Frequently Asked Questions
Variations
- •
Pear and Ginger Crumble
Replace apples with ripe pears and add 1 tsp ground ginger to both filling and topping.
- •
Apple and Blackberry Crumble
Replace 200g apple with frozen blackberries for a classic British combination.
- •
Tropical Fruit Crumble
Use mango, pineapple, and banana with lime juice for a tropical twist.
Substitutions
- •Coconut oil → Light olive oil, melted butter, or dairy-free spread (Butter gives richer flavour but increases calories slightly.)
- •Maple syrup → Honey or agave nectar (Use equal quantities. Honey is not vegan.)
- •Eating apples → Pears, plums, or seasonal fruit (Pears cook slightly faster, reduce baking time by 5 minutes.)
🧊 Storage
Cover and refrigerate up to 3 days. Reheat portions at 160°C for 12–15 minutes or microwave 2–3 minutes.
📅 Make Ahead
Assemble up to 24 hours ahead, cover, refrigerate unbaked. Bring to room temperature 20 minutes before baking.
