Gluten Free Apple Crumble with Oats and Almond Flour

This gluten free apple crumble is the kind of recipe that makes your kitchen smell like a hug. It was created specifically for anyone who wants a proper, golden-topped crumble without the gluten, without the refined sugar overload, and without spending half a Saturday in the kitchen. The filling is tender and warmly spiced, the topping is genuinely crunchy, and nobody at the table will guess it clocks in at under 220 calories per serving. It suits coeliacs, gluten-sensitive eaters, and honestly anyone who just wants a smarter dessert that still tastes indulgent.
The apple filling relies on a mix of Bramley and Braeburn apples, which gives you that ideal balance of tart softness and a little bite. A small amount of coconut sugar and a squeeze of lemon juice bring out the natural fruit flavour without drowning it in sweetness. Ground cinnamon and a pinch of cardamom add warmth that feels festive without being overpowering. For the crumble topping, certified gluten free rolled oats form the backbone, giving you real texture and a solid hit of soluble fibre. Almond flour adds a subtle nuttiness and helps the topping hold together in those lovely chunky clusters. Cold coconut oil is rubbed through the dry ingredients to create that classic crumbly texture, and a light drizzle of pure maple syrup ties everything together with a gentle caramel note. Every ingredient earns its place here.
Out of the oven, the topping turns a gorgeous deep golden colour, and the apples beneath are soft, jammy and fragrant. The contrast between the warm, bubbling fruit and the crisp oat clusters is exactly what a crumble should be. Serve it straight from the dish with a dollop of thick Greek yoghurt for extra protein, or keep it dairy free with a scoop of coconut yoghurt. A drizzle of almond butter on top sounds unconventional but adds a richness that is genuinely brilliant. Leftovers eaten cold the next morning with a spoon over a bowl of kefir is a breakfast decision you will not regret. The crumble also works beautifully with a small pour of oat milk if you want something lighter.
From a nutritional standpoint, this recipe delivers in ways a traditional crumble simply cannot. Each serving provides around 5 grams of fibre, partly from the apples themselves, which contain pectin, a soluble fibre linked to healthy cholesterol levels and good gut function. The oats contribute beta-glucan, another soluble fibre with well-documented benefits for blood sugar stability. Almond flour brings in healthy monounsaturated fats and a small boost of vitamin E, while the coconut oil keeps the saturated fat content modest thanks to the relatively small quantity used. The total added sugar is kept low by leaning on the natural sweetness of the fruit and using coconut sugar, which has a lower glycaemic index than white sugar. This is a dessert you can enjoy without the post-sugar crash, and that alone makes it worth bookmarking.
Ingredients
- 4 medium Braeburn apples (peeled, cored and sliced into 1cm pieces)
- 2 medium Bramley apples (peeled, cored and roughly chopped)
- 2 tbsp coconut sugar (for the filling)
- 1 tbsp lemon juice (freshly squeezed)
- 1.5 tsp ground cinnamon (divided between filling and topping)
- 0.3 tsp ground cardamom
- 1 tbsp arrowroot powder (or cornflour, to thicken the filling)
- 150 g certified gluten free rolled oats (not instant oats)
- 80 g almond flour (ground almonds work too)
- 3 tbsp coconut sugar (for the topping)
- 0.5 tsp ground cinnamon (for the topping)
- 0.3 tsp fine sea salt
- 60 g coconut oil (solid, cold from the fridge)
- 2 tbsp pure maple syrup (grade A or B)
- 1 tsp vanilla extract
Instructions
- 1
Preheat your oven to 180 degrees C (fan 160 degrees C, gas mark 4). Lightly grease a 20cm square or equivalent baking dish with a little coconut oil.
A ceramic or glass dish works best here as it distributes heat evenly and helps the filling bubble properly around the edges.
- 2
Combine the sliced Braeburn and chopped Bramley apples in a large bowl. Add the 2 tablespoons of coconut sugar, lemon juice, 1 teaspoon of cinnamon, ground cardamom and arrowroot powder. Toss everything together until the apples are evenly coated.
The arrowroot helps absorb the juice that releases from the apples during baking, so you get a jammy filling rather than a watery one.
- 3
Tip the apple mixture into your prepared baking dish and spread it into an even layer. Set aside while you make the topping.
- 4
In a large mixing bowl, combine the gluten free oats, almond flour, 3 tablespoons of coconut sugar, the remaining half teaspoon of cinnamon and the sea salt. Stir together with a fork.
- 5
Add the cold solid coconut oil to the dry topping ingredients. Using your fingertips, rub the coconut oil into the oat mixture until it resembles rough, uneven breadcrumbs with some larger clumps. This texture is exactly what you want.
Work quickly so the warmth of your hands does not melt the coconut oil completely. Cold fat creates a crunchier topping after baking.
- 6
Drizzle the maple syrup and vanilla extract over the topping mixture and stir briefly with a fork to distribute. The mixture should now hold together in clusters when you press a little between your fingers.
- 7
Scatter the crumble topping evenly over the apple layer. Do not press it down firmly. Leave it loose and slightly piled so air can circulate and the oats can crisp up properly.
A few apple slices peeking through the sides of the topping adds to the rustic charm and is completely fine.
- 8
Bake in the preheated oven for 38 to 42 minutes, until the topping is a deep golden brown and you can see the apple filling bubbling at the edges. If the topping browns too quickly, lay a loose piece of foil over the top for the final 10 minutes.
- 9
Remove from the oven and allow to cool for at least 10 minutes before serving. The filling will thicken slightly as it cools. Serve warm with Greek yoghurt, coconut yoghurt or a small scoop of vanilla frozen yoghurt.
Cooling for 10 minutes also makes portioning much cleaner and stops the filling from being scalding hot.
Nutrition per serving
218kcal
Calories
4.5g
Protein
31g
Carbs
9.5g
Fat
5.2g
Fibre
14g
Sugar
85mg
Sodium
Pro Tips
- ✓
Use a mix of tart and sweet apples for the most interesting flavour. One variety alone tends to make the filling either too sharp or too bland.
- ✓
Always check that your oats are certified gluten free. Oats are naturally gluten free but are frequently contaminated during processing unless specifically labelled.
- ✓
Solid coconut oil is essential for a crunchy topping. If your kitchen is warm and the oil has melted, pop it in the fridge for 20 minutes before using.
- ✓
Taste your apples before adding sugar. Very sweet apples may need slightly less coconut sugar in the filling.
- ✓
Leftovers reheat brilliantly in the oven at 160 degrees C for 10 to 12 minutes, which restores the topping crunch much better than a microwave does.
Frequently Asked Questions
Variations
- •
Pear and Ginger Crumble
Swap the Bramley apples for ripe conference pears and add 1 teaspoon of ground ginger to both the filling and the topping. The ginger adds a gentle heat that pairs brilliantly with the sweet pear.
- •
Apple and Blackberry Crumble
Add 150g of fresh or frozen blackberries to the apple filling for a gorgeous purple-hued base with a sharper, more complex flavour. Reduce the lemon juice to half a tablespoon as the blackberries add natural acidity.
- •
Seed-Boosted Topping
Stir 2 tablespoons of pumpkin seeds and 1 tablespoon of flaxseeds into the topping mixture before adding the coconut oil. This adds extra crunch, omega-3 fatty acids and additional fibre with very little effort.
- •
Nut Free Version
Replace the almond flour with certified gluten free oat flour or a light gluten free plain flour blend. The topping will be slightly less rich but still crispy and delicious, making the recipe safe for those with tree nut allergies.
Substitutions
- •Coconut oil → Cold unsalted butter or vegan block butter (If you are not dairy free, cold cubed butter produces a very similar crumbly texture and a slightly richer flavour. Use the same weight.)
- •Coconut sugar → Light brown sugar or raw cane sugar (Both work well in the same quantities. Coconut sugar has a slightly lower GI but the difference is modest. Avoid white caster sugar as it adds little flavour complexity.)
- •Maple syrup → Honey or brown rice syrup (Honey adds a floral note and works well in the topping. Brown rice syrup is a lower fructose option. Use the same volume as the maple syrup.)
- •Arrowroot powder → Cornflour or tapioca starch (Any of these starch thickeners work in the same quantity. All are gluten free when purchased pure.)
- •Almond flour → Gluten free oat flour or certified gluten free plain flour blend (Use for a nut free version. The topping will be slightly less rich but equally crispy if the coconut oil is kept cold.)
🧊 Storage
Store leftover crumble covered in the fridge for up to 4 days. Reheat portions in an oven preheated to 160 degrees C for 10 to 12 minutes to restore crunch. The microwave works in a hurry but will soften the topping considerably.
📅 Make Ahead
Assemble the full dish up to 24 hours ahead and refrigerate unbaked. Alternatively, store the raw crumble topping in an airtight container at room temperature for up to 2 days, then sprinkle over the apple filling just before baking.
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