Classic Apple Crisp Recipe with Oat Topping

This is the best healthy apple crisp — simple, quick, and made from real-food ingredients. It’s naturally gluten-free and dairy-free friendly. Warm, tender apples spiced with cinnamon and nutmeg, topped with a crisp oat mixture — ready for the oven in 20 minutes.

Apple crisp topped with a scoop of ice cream in a small bowl with a small bowl of walnuts on the side.

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“So yummy! Made this last weekend and we’ll for sure be making it again this year. Thanks for the great recipe.” ~Angie

About This Healthy Apple Crisp

  • Real, unrefined ingredients. Whole-grain oats, coconut sugar, oat flour and simple pantry spices make a dessert you can feel good about.
  • Gluten-free and dairy-free friendly. The recipe is written to be both gluten and dairy free, with easy swaps available if you don’t need those restrictions.
  • Cozy fall flavors. Warm cinnamon, nutmeg and soft baked apples deliver classic comfort-dessert taste.
  • Quick and easy. About 20 minutes to assemble, then the oven finishes the work.

Autumn is apple season, but this crisp is welcome any time of year. Baked apples with a buttery oat topping make for an effortless dessert that’s perfect for gatherings, weeknight treats, or holiday tables.

Ingredient Notes and Substitutions

Labeled ingredients for healthy apple crisp.
  • Apples – Use a mix of tart and sweet apples for balance. Granny Smith with Honeycrisp (or Fuji, Pink Lady) works well.
  • Coconut oil – Keeps the topping dairy free. Substitute cold butter if you prefer.
  • Oats – Rolled (old-fashioned) oats give the best texture. Use certified gluten-free oats if needed to avoid cross-contamination.
  • Oat flour – You can buy oat flour or grind rolled oats to make your own. Use certified gluten-free oat flour if necessary. If not gluten-free, swap with all-purpose or white whole wheat flour.
  • Arrowroot starch – Tapioca or cornstarch can be used as alternatives.
  • Walnuts – Pecans are a tasty swap. Omit nuts for a nut-free version.

A full ingredient list appears in the recipe card below. These notes help with ingredient choices and substitutions.

💚Clean food tip: Apples often appear on the EWG “Dirty Dozen,” so you may prefer organic apples. If avoiding agricultural residues is important, choose organic oats and oat flour as well.

Step-by-Step Directions

Apple slices and whole apples on a wood cutting board with a large chopping knife.

Step 1: Peel and slice the apples into even pieces (about ¼”–⅓” thick). To prevent browning, place slices in lightly salted water while you finish.

Sliced apples mixed with cinnamon and sugar in a large glass mixing bowl.

Step 2: In a large bowl, toss the apples with arrowroot (or starch), coconut sugar, cinnamon, nutmeg and vanilla until evenly coated. Transfer to a 12″ oven-safe skillet or a large baking dish.

Apple crisp topping mix with pieces of coconut oil on the top in a glass mixing bowl.

Step 3: In a medium bowl, combine rolled oats, oat flour, coconut sugar, cinnamon, chopped walnuts and salt. Add cold coconut oil in small pieces.

Apple crisp topping in a glass mixing bowl.

Step 4: Use a pastry cutter, fork, or your hands to cut the cold oil into the dry ingredients until the mixture is coarse and crumbly with small clumps of fat remaining.

Apple crisp with topping in a cast iron skillet before being baked.

Step 5: Sprinkle the oat topping evenly over the apples and gently press to even it out.

Apple crisp in a cast iron skillet after being baked.

Step 6: Bake at 350°F for 45–60 minutes, until the edges are bubbling and the topping is golden brown. Let cool slightly before serving.

Expert Tips

  • Slice apples evenly so they cook at the same rate — around ¼”–⅓” thick works well.
  • Keep sliced apples in salted water to prevent browning while you prepare the rest of the recipe. Drain before mixing.
  • Chill the oil — measure and refrigerate the coconut oil for at least 30 minutes so the topping bakes crisp and crumbly.
  • Use rolled oats (not quick-cooking) for a crunchy topping.
  • Serve warm with vanilla ice cream or coconut whipped cream for a dairy-free option.
Apple crisp topped with a scoop of ice cream in a small bowl with two vintage forks in the bowl.

FAQs

Do I have to peel the apples for apple crisp?

Peeling is optional. Many prefer peeled apples in desserts for texture, but leaving the skin on keeps extra nutrients and is perfectly fine if you don’t mind the texture.

What are the best apples for making apple crisp?

Firm, crisp varieties are best. A mix of tart and sweet — for example, Granny Smith with Honeycrisp, Fuji, Pink Lady or Golden Delicious — gives the best flavor balance.

Can I make apple crisp ahead of time?

Yes. Store the apple filling and topping separately in the refrigerator for up to 24 hours, then assemble and bake when ready.

Storing and Reheating

Storing: Refrigerate leftovers in an airtight container for up to 5 days.

Reheating: Warm individual portions in the microwave or reheat the whole dish in a 350°F oven for about 15 minutes. The topping will soften after storage and reheating.

Apple crisp in a cast iron skillet with some taken from the side of the skillet and a serving spoon in the skillet scooping up some of the apples.

More Better-for-You Desserts

  • Oat flour chocolate chip cookie with a bite taken out.
    Oat Flour Chocolate Chip Cookies (gluten-free)
  • Stacked oatmeal cookies.
    Easy Coconut Flour Oatmeal Cookies
  • Pieces of dark chocolate bark stacked on top of one another.
    Healthy Dark Chocolate Bark (dairy free)
  • img 374 14
    Healthy Dark Chocolate Peanut Butter Balls

If you make this recipe, please leave a star rating or comment — I’d love to know how it turned out. Share a photo on social media and tag @CleanPlateMama!

Eat Clean. Be Well!
-Sara

Single serving of apple crisp in a small bowl topped with a scoop of vanilla ice cream with 2 vintage forks in the bowl.

Healthy Apple Crisp

This healthy apple crisp is easy, made from simple real-food ingredients, and is both gluten free and dairy free friendly. Warm apples, cinnamon and a crisp oat topping—ready in about 20 minutes to prep.
5 from 22 votes
Course: Dessert
Cuisine: American
Diet: Gluten Free
Prep Time: 20 minutes
Cook Time: 45 minutes
Total Time: 1 hour 5 minutes
Servings: 8 servings
Author: Sara

Equipment

  • 1 12″ oven-safe skillet or large baking dish
  • 2 mixing bowls
  • Pastry cutter (optional)

Ingredients

Ingredients for Apple Filling

  • 3 Granny Smith apples
  • 5 Honeycrisp apples
  • 1 ½ tsp ground cinnamon
  • ¼ tsp ground nutmeg
  • 2 tbsp arrowroot starch
  • ¼ cup coconut sugar
  • 1 tsp pure vanilla extract

Ingredients for the Topping

  • 1 cup rolled oats (old-fashioned)
  • ½ cup oat flour
  • ½ cup chopped walnuts
  • ½ cup coconut sugar
  • 1 tsp ground cinnamon
  • ¼ tsp fine sea salt
  • ¼ cup coconut oil, chilled (or cold butter)

Instructions

  • Preheat oven to 350°F. Prepare a 12″ oven-safe skillet or a large baking dish.
  • Peel and slice apples into ¼”–⅓” slices. Place in a large bowl.
  • Add cinnamon, nutmeg, arrowroot starch, coconut sugar and vanilla to the apples. Toss to coat and transfer to the prepared skillet or baking dish.
  • In a medium bowl, combine oats, oat flour, walnuts, coconut sugar, cinnamon and salt. Add chilled coconut oil in small pieces and cut into the mixture with a pastry cutter or fork until coarse and crumbly with small clumps of oil remaining. Spread evenly over the apples and gently press to level.
  • Bake uncovered for 45–60 minutes, until edges are bubbly and topping is golden.
  • Allow to cool slightly and serve warm. Enjoy!

Notes

  • A 12″ cast iron skillet is ideal. A 9×13 dish will also work, though baking time may be shorter (check at 35–40 minutes).
  • Chill the coconut oil for at least 30 minutes so the topping bakes up crisp.
  • Any sweet, crisp apple (Gala, Fuji, Pink Lady) can replace Honeycrisp if needed.
  • Keep sliced apples in lightly salted water while slicing to prevent browning; drain before using.

Nutrition

Calories: 336 kcal
|
Carbohydrates: 56 g
|
Protein: 4 g
|
Fat: 13 g
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