This healthy apple crisp has everything you want from the classic: soft, jammy apples and a golden, crunchy oat topping. The difference is what’s inside. It’s made with no added sugar and no protein powder, yet each serving has about 10 grams of protein on its own and about 15 grams with a spoonful of Greek yogurt vanilla cream.

The protein comes from real ingredients you already know: rolled oats, almond flour, walnuts, hemp hearts, peanut butter and Greek yogurt. It’s an easy apple dessert for fall baking season, and it works as a lighter Thanksgiving dessert, a cozy weeknight treat, or even a weekend breakfast. If you’ve been looking for apple recipes that feel classic but lighter, or for fall desserts that skip the sugar, start here.

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Quick recipe overview


Prep time	20 minutes
Cook time	40–45 minutes
Cooling time	15 minutes
Total time	About 1 hour 20 minutes
Servings	6
Pan	8×8-inch baking dish
Calories	About 410 per serving (with yogurt cream)
Protein	About 15 g per serving (with yogurt cream); about 10 g without
Dietary	Eggless, vegetarian, no added sugar, gluten-free with certified gluten-free oats

Why you’ll love this healthy apple crisp

No added sugar. The filling and topping are sweetened with monk fruit sweetener. The only sugar comes from the apples and other whole ingredients.
High in protein without protein powder. About 15 g per serving with the yogurt cream, from oats, nuts, hemp hearts, peanut butter and Greek yogurt.
A topping that actually stays crunchy. Oats, almond flour and chopped walnuts bake into crisp, clumpy clusters.
Easy to make gluten-free. Use certified gluten-free oats and everything else is naturally gluten-free.
Supermarket ingredients. Nothing you need to order online.
Great for fall gatherings. It bakes in one dish and serves a crowd at Thanksgiving or Friendsgiving.

Ingredients

For the apple filling

900 g apples (about 2 lb, or 5 medium), peeled and diced into ¾-inch (2 cm) cubes. Use firm apples that hold their shape when baked, such as Granny Smith, Honeycrisp, Pink Lady or Braeburn. A mix of tart and sweet gives the best flavor. Avoid soft apples like Red Delicious or McIntosh, which turn mushy.
1 tablespoon lemon juice. Keeps the apples from browning and brightens the flavor.
2 tablespoons (24 g) monk fruit sweetener. Use a granulated monk fruit blend that measures 1:1 like sugar. You can reduce it if your apples are very sweet.
1 tablespoon (8 g) cornstarch. Thickens the apple juices into a glossy sauce, so the crisp isn’t watery. Arrowroot powder works in the same amount.
1 teaspoon ground cinnamon (optional). Classic in apple crisp, but the recipe works without it.

For the protein oat topping

1 cup + 2 tablespoons (100 g) old-fashioned rolled oats. These give the crisp texture and some protein. Don’t use steel-cut oats; they won’t soften. Quick oats work but make a finer, less chunky topping. For gluten-free, use certified gluten-free oats.
½ cup (60 g) almond flour. Adds protein and a tender, buttery crumb. Look for finely ground blanched almond flour.
½ cup (50 g) chopped walnuts. Adds crunch and protein. Pecans work the same way.
3 tablespoons (30 g) hemp hearts. Shelled hemp seeds, found near the nuts or in the health food aisle. They add about 9 g protein to the whole batch with almost no flavor.
¼ cup (60 g) natural peanut butter. Binds the topping into clusters and adds protein. Use a drippy, natural-style peanut butter with no added sugar.
2 tablespoons (30 g) unsalted butter, melted. Helps the topping turn golden and crisp.
2½ tablespoons (30 g) monk fruit sweetener.
A pinch of salt.

For the Greek yogurt vanilla cream

1¼ cups (300 g) plain nonfat Greek yogurt. This is the biggest protein source in the recipe. Choose thick, plain Greek yogurt, not regular yogurt.
1 tablespoon monk fruit sweetener.
½ teaspoon vanilla extract.

Equipment

8×8-inch (20 cm) baking dish
2 mixing bowls
Vegetable peeler and sharp knife
Baking sheet (to catch any drips)
Aluminum foil

How to make healthy apple crisp

Preheat the oven. Heat the oven to 350°F (175°C). Lightly grease an 8×8-inch baking dish.
Make the filling. Peel, core and dice the apples into ¾-inch cubes. In a large bowl, toss the cubes with the lemon juice, 2 tablespoons monk fruit, cornstarch and cinnamon (if using) until every piece is lightly coated and you can’t see dry cornstarch. Spread the apples evenly in the dish.
Make the topping. In a second bowl, stir together the oats, almond flour, walnuts, hemp hearts, 2½ tablespoons monk fruit and salt. Add the peanut butter and melted butter. Mix with a fork, then squeeze with your fingers until the mixture forms damp, pea- to marble-sized clumps. If it looks dry and sandy, it needs more mixing.
Assemble. Scatter the topping evenly over the apples, keeping some larger clumps. Don’t press it down; loose clusters bake crispier.
Bake. Place the dish on a baking sheet and bake for 40–45 minutes, until the juices bubble thickly around the edges and the topping is deep golden. A knife should slide easily into the apples. If the topping browns before the apples are tender, cover loosely with foil for the remaining time.
Cool. Let the crisp rest for at least 15 minutes. This is when the juices thicken into a sauce, so don’t skip it.
Make the yogurt cream. While the crisp cools, stir the Greek yogurt, 1 tablespoon monk fruit and vanilla until smooth.
Serve. Spoon the crisp into bowls and top each serving with about ¼ cup (50 g) of the yogurt cream.

Watch how to make it

Prefer to watch? Here’s my step-by-step video so you can see exactly what the topping clumps and bubbling filling should look like.

Tips for the best healthy apple crisp

Cut the apples evenly. Same-size cubes cook at the same rate, so you won’t get some mushy and some crunchy.
Mix the topping until it clumps. Peanut butter needs a little pressure to coat the oats. Clumps are what make a crisp crisp.
Use a baking sheet underneath. Apple juices can bubble over the edge.
Judge doneness by the bubbles. Thick, slow bubbles at the edges mean the cornstarch has cooked and the sauce will set.
Taste your apples first. Very sweet apples (like Honeycrisp) may need less monk fruit; tart Granny Smiths may need the full amount.
Let it rest. Cut into it straight from the oven and the filling will run. After 15 minutes it holds together.

Common mistakes

Problem	Why it happens	How to fix it
Watery filling	Cornstarch wasn’t cooked long enough, or the crisp was served too hot	Bake until the edges bubble thickly, then rest 15 minutes
Soggy topping	Topping was pressed down, or too much juicy fruit was piled on	Scatter loosely; keep the apple layer level with the dish
Topping burns before apples soften	Oven runs hot, or the cubes are too big	Cover with foil once golden; dice apples into ¾-inch cubes
Mushy apples	Soft apple variety	Use firm baking apples like Granny Smith or Honeycrisp
Dry, sandy topping	Not mixed enough, or peanut butter was too thick	Squeeze with your fingers; use drippy natural peanut butter

Substitutions

Original	Substitute	Effect	Recommended?
Peanut butter	Almond butter or cashew butter, same amount	Milder flavor, similar protein	Yes
Walnuts	Pecans, same amount	Sweeter, classic fall flavor	Yes
Butter	Coconut oil, same amount	Slightly less browning; makes the topping dairy-free	Yes
Almond flour	Oat flour, same amount	Less protein, slightly drier topping	Works, with less protein
Nonfat Greek yogurt	2% Greek yogurt	Richer and creamier; a few more calories	Yes
Greek yogurt cream	Dairy-free yogurt	Much lower protein unless the yogurt is high protein	Only if dairy-free is needed
Monk fruit sweetener	Maple syrup or brown sugar	Recipe is no longer “no added sugar”	Not for this version
Cornstarch	Arrowroot powder, same amount	Same thickening	Yes

Variations

Apple pear crisp: replace up to half the apples with firm, ripe pears.
Apple cranberry crisp: add ½ cup fresh or frozen cranberries to the filling for a tart, festive version.
Pecan pie style: swap walnuts for pecans and add a pinch of nutmeg.
Breakfast crisp: serve a smaller portion cold with extra Greek yogurt.

How to store apple crisp

Refrigerator: cover tightly or move to an airtight container and refrigerate for up to 4 days. Keep the yogurt cream in a separate container.
Freezer: freeze the baked, cooled crisp, well wrapped, for up to 3 months. Thaw overnight in the fridge.
Reheating: warm uncovered at 350°F (175°C) for 10–15 minutes to re-crisp the topping. The microwave works for single servings, but the topping softens.

Make ahead and meal prep

You can make the topping up to 2 days ahead and refrigerate it in a sealed container. Slice and toss the apples just before baking so they don’t release too much juice. The baked crisp can be portioned into containers with the yogurt cream on the side for easy grab-and-go desserts or breakfasts.

Serving suggestions

Warm, with a spoonful of the Greek yogurt vanilla cream
Cold from the fridge for breakfast
As a lighter Thanksgiving dessert alongside pumpkin pie
With a sprinkle of extra chopped walnuts for more crunch

Nutrition information (per serving, 1/6 of the recipe)

	Crisp + yogurt cream	Crisp only
Calories	410	375
Protein	15 g	10 g
Carbohydrates	39 g	37 g
Total fat	24 g	24 g
Saturated fat	5 g	5 g
Fiber	6 g	6 g
Sugar	18 g	17 g
Added sugar	0 g	0 g
Sodium	85 mg	65 mg

Assumptions: peeled apples, natural peanut butter with salt and no added sugar, unsalted butter, plain nonfat Greek yogurt, and a monk fruit + erythritol blend counted as 0 calories and 0 g carbohydrate. Cinnamon not included.

Nutrition information is an estimate and may vary depending on the brands and ingredients used.

What makes this apple crisp higher in protein

Most of the protein comes from the Greek yogurt cream (about 5 g per serving), peanut butter, oats, almond flour, hemp hearts and walnuts. The sugar in this recipe comes from the apples themselves; no sugar, honey or maple syrup is added. The 6 g of fiber per serving comes mainly from the oats, apples and nuts. Most of the fat comes from the nuts, peanut butter and almond flour.

Healthy apple crisp FAQs

How much protein is in this apple crisp? About 10 g per serving on its own and about 15 g with ¼ cup of the Greek yogurt vanilla cream, based on 6 servings.

Does this recipe use protein powder? No. All of the protein comes from whole ingredients: oats, almond flour, walnuts, hemp hearts, peanut butter and Greek yogurt.

Is this apple crisp gluten-free? It is when you use certified gluten-free oats. Regular oats can be cross-contaminated with wheat.

Is it sugar-free? It has no added sugar, but it isn’t sugar-free. Apples naturally contain sugar.

What’s the difference between apple crisp and apple crumble? In the US, an apple crisp usually has oats in the topping, and an apple crumble often doesn’t, though many people use the names interchangeably. If you came looking for an easy apple crumble, this recipe works the same way: fruit on the bottom, a crumbly topping on top.

What’s the difference between apple crisp and apple cobbler? An apple cobbler has a soft biscuit or batter topping. An apple crisp has a crunchy, crumbly topping like this oat and walnut one.

Is this healthier than apple pie? Compared with a classic homemade apple pie, it skips the pastry crust and the added sugar, and it has about 15 g protein per serving with the yogurt cream. It’s an easy swap if you want an apple pie-style dessert for Thanksgiving with less work.

What are the best apples for apple crisp? Firm apples that hold their shape: Granny Smith, Honeycrisp, Pink Lady or Braeburn. A mix of tart and sweet tastes best.

Can I make this apple crisp without peanut butter? Yes. Almond butter or cashew butter work the same way. For a nut-free version, sunflower seed butter works, and swap the walnuts for pumpkin seeds.

Can I make it dairy-free? Use coconut oil instead of butter and a high-protein dairy-free yogurt for the topping. The protein will be lower if your yogurt is lower in protein.

Why is my apple crisp watery? Usually it was served too soon or wasn’t baked until the edges bubbled thickly. Let it rest 15 minutes so the juices set.

Can I make it ahead for Thanksgiving? Yes. Bake it up to a day ahead, refrigerate, and reheat at 350°F for 10–15 minutes.

Can I freeze apple crisp? Yes, for up to 3 months. Thaw overnight in the fridge and reheat in the oven to re-crisp the topping.

Final thoughts

This healthy apple crisp gives you the warm, bubbling apples and crunchy oat topping you love, with no added sugar and about 15 grams of protein per serving. It’s simple enough for a weeknight and special enough for your holiday table. If you make it, leave a comment and let me know which apples you used. And if you’d like to see every step, watch the video above.