This healthy plum crisp is the perfect summer-to-fall dessert made with juicy plums and a golden oat crisp topping. It’s vegan, gluten-free, naturally sweetened, and ready in 45 minutes!

If you love fruit crisps, you’ll also enjoy my Healthy Blueberry Crisp, Healthy Peach Crisp, Healthy Berry Crisp, and Healthy Apple Crisp.

Healthy plum crisp topped with a scoop of vegan vanilla ice cream.

My local farmers market is still overflowing with late-season plums, so I couldn’t resist creating one more crisp recipe before summer slips away *sad face*. I must admit, this healthy plum crisp hit the spot.

We’re talking jammy, juicy plums that turn all pink (keep the skin on!) and syrupy in the oven as they bubble away under an oat crisp topping that bakes up perfectly golden. Once it’s out of the oven, it’s practically begging for a scoop of vanilla ice cream on top. It’s the perfect way to savor the end of summer, or welcome fall.

Why You’ll Love This Recipe

  • Best use of plum season
  • Comes together quickly: just mix, sprinkle, and bake
  • Made with simple, healthy ingredients
  • Bakes in 30 minutes
  • Vegan, gluten-free, and refined sugar-free
  • Perfect recipe for summer or fall
  • Sweet enough for dessert + wholesome enough for breakfast
— Megan

Ingredient Notes

Here’s what you’ll need to make this healthy plum crisp recipe! Scroll down to the recipe card to get the full recipe with measurements.

  • Plums: Use fresh, ripe plums for the best flavor and sweetness. No need to peel the plums – I actually prefer to keep the skin on – it turns all soft and pink while it bakes.
  • Oats: The base of the crisp topping. Rolled or quick oats work here. For gluten allergies, use certified gluten-free oats.
  • Almond Flour: Adds a moist and tender texture to the crisp topping.
  • Sliced Almonds: Feel free to swap for another nut based on what you have. Pecans, walnuts, or cashews all work!
  • Maple Syrup: The plums get tossed with a little maple syrup to make them all jammy and juicy. It’s also used in the crisp topping for natural sweetness.
  • Vegan Butter: Adds a golden finish to the crisp topping. You can swap for melted coconut oil.
  • Vanilla Extract: A must.
  • Spices: Cinnamon, ground ginger, and salt add warmth and tie all the flavors together.

Optional: If your plums are extra juicy, toss with 1-2 tablespoons of cornstarch to thicken the filling. I like a juicy filling, so I leave this out.

How to Make Healthy Plum Crisp

This easy plum crisp comes together in just a few simple steps:

Sliced plums tossed with maple syrup and cinnamon for healthy plum crisp.
  1. Step 1: Slice the plums (leave the skin on) and add them to a 9-inch pie dish (or similar sized baking dish). Toss with maple syrup, cinnamon, and cornstarch (if using).
Crisp topping being sprinkled over sliced plums in a baking dish before baking.
  1. Step 2: Mix together the oats, almond flour, sliced almonds, maple syrup, melted vegan butter, vanilla extract, cinnamon, ground ginger, and a pinch of salt. Sprinkle the crisp topping evenly over the plum filling.
Freshly baked plum crisp with golden almond oat topping bubbling around the edges.
  1. Step 3: Bake at 350°F for 30 minutes, or until the filling is bubbly and the topping is golden brown. If the topping starts to brown too quickly, just cover it with foil and keep baking until the plums are tender.
Close-up of juicy baked plums and crunchy crisp topping.
  1. Step 4: Let it cool slightly, then scoop into ramekins and serve warm topped with vegan vanilla ice cream. Enjoy!

Megan’s Tips

  • Use ripe, juicy plums: Fresh, in-season plums make all the difference!
  • Even slices = even bake: Try to slice your plums about the same thickness to get an even bake.
  • Nutrient boost: Add 1–2 tablespoons of chia seeds, hemp seeds, or ground flaxseed to the crisp topping for a little extra fiber and healthy fats.
  • Bake until bubbly: The filling should be juicy and bubbling around the edges — that’s how you know it’s ready. If the topping starts to brown too quickly, just cover it with foil and keep baking until the plums are tender.

Serving Plum Crisp

My favorite way to enjoy this plum crisp? Fresh from the oven (still warm) with a big scoop of vegan vanilla ice cream on top. You know when the ice cream starts to melt into the crisp? That’s the perfect bite!

Other serving ideas:

  • Top with coconut whipped cream or vegan ice cream
  • Serve with vegan yogurt for a cozy fall breakfast
  • Add a drizzle of maple syrup or almond butter on top for a little extra indulgence

Storage & Reheating

Store any leftovers covered in the fridge for 3-4 days. Reheat in the oven at 325ºF until warm and crisp (about 10-12 minutes), or microwave if you’re short on time.

This plum crisp feels like that cozy sweet spot between summer and fall. I hope it brings a little seasonal joy to your kitchen, just like it does to mine!

FAQs

Why is my plum crisp watery?

Plum crisp can become watery because the plums will naturally release liquid as they bake. To troubleshoot that, you can toss the plum slices in a bit of cornstarch. It helps thicken those juices into a delicious jammy filling.

How do you keep plum crisp from getting soggy?

Add some cornstarch! Depending on how juicy your plums are, you might want to toss them in 1-2 tablespoons of cornstarch. It helps thicken the juices into a delicious jammy filling.

How do you store leftover plum crisp?

Store your leftover plum crisp in an airtight container in the refrigerator for 3-4 days. Note: the topping will soften as it sits. To bring back some of the crisp texture, I recommend reheating individual portions in the oven or air fryer until warmed through. The microwave works too, but the topping won’t be as crisp.

If you make this recipe, please be sure to leave a comment and ★★★★★ star rating below. Don’t forget to tag me on Instagram so I can see your creations!

Close-up of juicy baked plums and crunchy crisp topping
5 from 1 rating

Healthy Plum Crisp

This healthy plum crisp is the perfect late summer-to-fall dessert made with juicy plums and a golden oat crisp topping. It's vegan, gluten-free, naturally sweetened, and ready in 45 minutes!

Equipment

Ingredients
 

Plums

  • 6 plums, ripe but slightly firm
  • ¼ cup maple syrup
  • ¼ teaspoon cinnamon
  • 2 tablespoons cornstarch, optional, see note

Crisp Topping

Instructions
 

  • Preheat the oven: Set the oven to 350°F.
  • Make the plum filling: Slice the plums, leaving the skin on, and add them to a 9-inch pie dish (or similar sized baking dish). Toss with maple syrup, cinnamon, and cornstarch (if using).
  • Make the crisp topping: In a mixing bowl, combine the oats, almond flour, sliced almonds, maple syrup, melted vegan butter, vanilla extract, cinnamon, ground ginger, and a pinch of salt. Stir everything together until crumbly and well combined. Sprinkle the crisp topping evenly over the plum filling.
  • Bake: Bake for 30 minutes, or until the topping is golden brown and the plum filling is bubbly. If the topping starts to brown too quickly, just cover it with foil and keep baking until the plums are tender.
  • Serve and enjoy! Let it cool slightly, then scoop into ramekins and serve warm topped with vegan vanilla ice cream. Enjoy!

Notes

  • Use ripe, juicy plums: Fresh, in-season plums make all the difference!
  • Even slices = even bake: Slice the plums about the same thickness to get an even bake.
  • Nutrient boost: Add 1–2 tablespoons of chia seeds, hemp seeds, or ground flaxseed to the crisp topping for a little extra fiber and healthy fats.
  • Bake until bubbly: The filling should be juicy and bubbling around the edges—that’s how you know it’s ready. If the topping starts to brown too quickly, just cover it with foil and keep baking until the plums are tender.
  • Storage: Store any leftovers covered in the fridge for 3-4 days. Reheat in the oven at 325ºF until warm and crisp (about 10-12 minutes), or microwave if you’re short on time.
Serving: 1serving, Calories: 246kcal, Carbohydrates: 31g, Protein: 4g, Fat: 12g, Saturated Fat: 2g, Polyunsaturated Fat: 3g, Monounsaturated Fat: 5g, Trans Fat: 1g, Sodium: 119mg, Potassium: 205mg, Fiber: 3g, Sugar: 18g, Vitamin A: 171IU, Vitamin C: 5mg, Calcium: 63mg, Iron: 1mg
Did you make this recipe?Tag @booboosbakeryy with hashtag #booboosbakery on Instagram. We love to see what you make!