Healthy Apple Oat Crumble Cake (Easy Dessert)

This Apple Oat Crumble Cake is made without flour or refined sugar. The sweetness comes from agave syrup, while oats and apples add fiber and texture. Mascarpone or Greek yogurt keeps the cake soft and moist. It works in both the air fryer and oven.

Ingredients:

• 3 medium apples, diced
• 3 eggs
• 3 tbsp agave syrup
• 1 cup mascarpone or Greek yogurt (8.8 oz / 250 g)
• 1 2/3 cups rolled oats (150 g)
• 1 tsp cinnamon
• 1 tsp vanilla sugar or 1 tsp vanilla extract
• Optional: 1 handful walnuts

Instructions:

1. Preheat the air fryer or oven to 350°F (180°C).
2. In a bowl, whisk the eggs with agave syrup and vanilla.
3. Add mascarpone or Greek yogurt and mix until smooth.
4. Stir in oats and cinnamon.
5. Fold in apples and walnuts.
6. Pour the batter into a baking pan suitable for an air fryer.
7. Bake for 40 minutes in the air fryer or 30–35 minutes in the oven.
8. Verify doneness with a toothpick and let cool before slicing.

Nutrition (per serving):
Calories: 165 | Protein: 6 g | Carbs: 22 g | Fat: 7 g |

This apple oat crumble cake is a great option if you’re looking for a simple dessert made with everyday ingredients. Oats add fiber and texture, while apples naturally sweeten the cake and keep it moist. Because it doesn’t rely on refined flour, this recipe feels lighter than traditional cakes and works well for both everyday treats and healthier baking occasions.

If you enjoy simple homemade desserts, you may also like this soft pumpkin muffins recipe.

Oats are known for their fiber content and role in balanced diets, as explained by Healthline.

How to Store Apple Oat Crumble Cake

This apple oat crumble cake can be stored in an airtight container in the refrigerator for up to three days. It tastes great both cold and gently reheated. For best results, reheat individual slices briefly to maintain the soft texture.