Healthy Apple Crumble with Oats and Walnuts

The baking time may vary due to your oven, the size of the apple cubes and the depth of the bowls.

A good crumble combines soft apple with a topping that retains some bite.

Cut the apple into evenly sized pieces

Small, similar pieces cook more evenly than a mixture of large and small chunks. Use a fork to check whether the apple has reached your preferred softness.

Avoid pressing down the topping

Distribute the crumble loosely over the fruit. This helps preserve its coarse texture and creates individual crisp pieces.

Watch the walnuts

Nuts can become dark before the apple has finished cooking. Pay particular attention to the topping during the final minutes.

Add quark or yoghurt when serving

Keeping these additions separate helps the topping retain its texture. Store dairy separately if you are preparing the crumble ahead.

Troubleshooting

Apple, oats and nuts provide a range of nutrients. The oats and walnuts also contribute texture and flavour.

However, an ingredient list does not automatically make a dessert low in calories or suitable in unlimited quantities. Butter, honey, ground almonds and walnuts all contribute to its energy content.

Here, “healthy apple crumble” describes a homemade recipe with familiar ingredients that can fit within a varied diet. Portion size and your overall eating pattern still matter.

Is this apple crumble free from added sugar?

No. The tablespoon of honey is an added source of sugar. The apple also contains naturally occurring sugars.

Raw honey remains a sugar source. It does not guarantee a stable blood sugar response, so describing the recipe as providing sweetness “without spikes” would be misleading. [1]

Is this a high-protein apple crumble?

The original recipe does not include a substantial portion of quark, yoghurt or another protein-rich addition. We therefore do not present it as a high-protein dessert.

To add more protein, serve it with quark or Skyr. The amount of protein added depends on your chosen product and serving size.

Read more about nutrition and muscle growth.

How many calories are in one serving?

This depends partly on the size of the apple, the weight of your handful of walnuts and the amount of honey in your tablespoon.

For a calculation that reflects what you actually prepare:

1. Weigh the ingredients.
2. Calculate their nutritional values using product information.
3. Add the values together.
4. Divide the total by two.
5. Calculate any quark or yoghurt separately.

Without those details, an exact calorie figure would suggest more precision than the recipe allows.

You do not need to reserve this dish for a rest day. It can fit on training days and days without exercise.

As a dessert

Enjoy one of the two portions after a meal. The crumble does not need a special recovery benefit to be worth making.

For breakfast

Serve it with quark or yoghurt. Whether that provides enough food for your breakfast depends on your needs and the portions you choose.

As part of meal preparation

Bake both servings and keep one for later. Store dairy separately and add it just before eating.

There is no compulsory time to eat this crumble for weight loss or muscle growth. Choose a moment that fits your day and overall diet.

Yes, if the portion fits your overall eating pattern. You do not have to remove desserts when you want to lose weight.

At the same time, “made with oats” does not automatically mean “low in calories”. The quantities of nuts, honey, butter and additional toppings all count.

Dividing the recipe between two dishes before baking makes the portions clear, without needing to label the food as good or bad.

For more context on your overall diet, read our guide to macronutrients.

The recipe above remains unchanged. If you would like to experiment another time, try these ideas:

Variations can change the flavour, texture, baking time and nutritional values.

Replacing butter with coconut oil alone does not make the recipe vegan: the original honey is also an animal-derived ingredient.

Refrigerating

Allow the crumble to cool briefly, then cover and refrigerate within two hours. Store at approximately 4°C and eat within two days, following general guidance for leftovers. [2]

Keep quark or yoghurt separate and follow the storage instructions for those products too.

Reheating

Reheat the crumble in an ovenproof dish until hot throughout. Watch the topping and cover it loosely if necessary.

You can also use a microwave, although the topping will generally become softer.

Freezing

To keep a portion for later, freeze the cooled crumble without dairy toppings in a suitable sealed container. Label it with the date.

Approximately three months is a general storage guideline for frozen meal leftovers. Defrost in the fridge and reheat thoroughly. The topping may be softer after freezing. [3]

Would you like to alternate with another breakfast with apple-like spicyness? Check out our Carrot Cake Oatmeal: A 10-Minute Breakfast with Carrot and Cinnamon.

Would you rather have a cold breakfast that you can cook in advance? Try the Mango Coconut Chia Pudding.

At Aurora Personal Training in Eindhoven we look at training and the habits surrounding it. A viable diet offers room for nutritious meals and dishes that you like.

Plan a free intake at Aurora Personal Training if you want to discuss how training and nutrition can fit your goals and agenda.

1. Netherlands Nutrition Centre: sugar and sugar sources, including honey.
2. Netherlands Nutrition Centre: safe cooling and storage.
3. Netherlands Nutrition Centre: using and freezing leftovers.

The linked nutrition and storage sources are in Dutch.