Skip to content
RecipeSeeker
Baked apple crisp with golden oat-walnut crumble in a cream ceramic dish, one serving in a bowl beside it, on a deep green cloth
DessertSnackVegetarian

High Fiber Apple Crisp (Oat, Walnut & Flax Topping)

Warm cinnamon apples under a crunchy oat, walnut, and flaxseed crumble. 6.7g fiber per serving, sweetened only with maple syrup.

6.7g Fiber7.7g Protein433mg Potassium
Jump to recipePin it
Prep15 min
Cook40 min
Calories236 kcal
Serves6

Key nutrients per serving

By The Recipe Seeker Kitchen

Updated 2026-10-01

Ingredients

6 servings

Instructions

5 steps · about 55 minutes total

  1. Heat the oven

    Preheat oven to 375°F (190°C). Lightly grease a 9x9-inch baking dish.

  2. Toss the filling

    In a large bowl, toss the apple slices with maple syrup, lemon juice, cornstarch, cinnamon, and nutmeg until every slice is coated. Spread evenly in the dish.

  3. Mix the topping

    In the same bowl, combine oats, almond flour, walnuts, ground flaxseed, cinnamon, and salt. Stir in the maple syrup and melted coconut oil until crumbly clusters form.

  4. Assemble and bake

    Scatter the topping evenly over the apples. Bake 35-40 minutes, until the topping is deep golden and the filling bubbles at the edges.

  5. Rest and serve

    Rest 10 minutes so the filling sets. Serve warm, plain or with a spoonful of Greek yogurt.

Why this helps

fiber

Recipe method developed in-house for The Recipe Seeker, informed by the oat-nut-maple crisp structures published by Columbus Community Hospital's diabetes education program and Aultman Health. Skin-on apples, oats, walnuts, almond flour, and ground flaxseed stack to 6.7g fiber per serving with no refined sugar. Nutrition calculated from USDA FoodData Central ingredient data — apple energy and vitamin C use USDA standard reference values (52 kcal / 4.6 mg per 100g), since the FDC search record omits those rows.

All about FiberAll about ProteinAll about Potassium

Nutrition facts

per serving · % DV
  • Calories 236 kcal12%
  • Protein 7.7g15%
  • Total Carbohydrate 58.6g21%
  • Dietary Fiber 6.7g24%
  • Total Sugars 34.4g69%
  • Total Fat 22.1g28%
  • Sodium 6mg0%

Vitamins & minerals

  • Iron 1.8mg10%
  • Calcium 91mg7%
  • Potassium 433mg9%
  • Vitamin C 8.7mg10%

*Percent Daily Values are based on a 2,000 calorie diet. Values are per serving (recipe makes 6).

Nutrition is an estimate calculated from USDA FoodData Central ingredient data and may vary by ingredient brand, preparation, and portion size.

Questions, answered

How much fiber is in each serving?
About 6.7g per serving (24% of the daily value), calculated from USDA FoodData Central ingredient data for skin-on apples, oats, almond flour, walnuts, and ground flaxseed. Keeping the apple skin on adds roughly 0.8g fiber per serving.
Can I peel the apples?
Yes — the crisp still works, but you lose about 0.8g fiber per serving. Thin-skinned varieties like Gala or Fuji barely register once baked, so keep them on if you can.
Is this apple crisp gluten-free?
It can be: use certified gluten-free rolled oats. Almond flour, walnuts, flaxseed, and the remaining ingredients are naturally gluten-free.
Can I use butter instead of coconut oil?
Yes — swap in the same amount of melted butter. The topping tastes slightly richer; the fiber numbers barely change.
How do I store leftovers?
Cover and refrigerate up to 4 days. Reheat individual portions in a 350°F (175°C) oven for 10 minutes to re-crisp the topping; the microwave makes it soft.
Can I cut back on the sugar?
Reduce the maple syrup to 3 Tbsp total (1 Tbsp in the filling, 2 in the topping). Sweet-tart apples like Honeycrisp carry the flavor, and the fiber count stays the same.

Made it? Rate it.

No ratings yet. Be the first to rate “High Fiber Apple Crisp (Oat, Walnut & Flax Topping)”.

Tap a star to rate.

Same nutrients, different dish

You might also like

All recipes
Farro grain bowl with roasted sweet potato, bell peppers and tahini drizzle45 min

430 kcal4 servings

Roasted Veggie Farro Bowl

Chewy farro with caramelized sweet potato, peppers and tahini-lemon dressing. 9g fiber, 60mg vitamin C and 700mg potassium per bowl.

9g Fiber60mg Vitamin C110mg Magnesium
Bowl of roasted sweet potato and black beans over rice with tahini drizzle45 min

520 kcal4 servings

Roasted Sweet Potato & Black Bean Bowl

Caramelized sweet potato and black beans over rice with lemon-tahini drizzle. 1050mg potassium, 14g fiber and 39% of your vitamin C. Sweet, smoky, satisfying.

1050mg Potassium14g Fiber35mg Vitamin C
Two glasses of purple blueberry almond smoothie with blueberries on top5 min

385 kcal2 servings

Blueberry Almond Smoothie

Thick, creamy and deeply purple: blueberries, almond butter, banana and Greek yogurt. 17g protein and 311mg calcium — the 5-minute breakfast that tastes like dessert.

17g Protein311mg Calcium5g Fiber