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Fruit Crisp Frozen Fruit Oats

Featured in: Comfort Baking

This comforting dish combines mixed frozen fruit with a warm, crunchy oat topping for a delightful finish. Sweetened lightly and infused with cinnamon and lemon juice, the fruit base bubbles as it bakes. The oat topping melts into golden clusters full of texture and flavor. Ideal for using pantry and freezer staples, it’s simple to prepare and serves six. Enjoy it warm or chilled, and customize with nuts or dairy-free butter substitutes.

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Updated on Wed, 19 Nov 2025 15:19:00 GMT
Warm fruit crisp bubbling with mixed berries; this easy dessert has an oat topping. Save
Warm fruit crisp bubbling with mixed berries; this easy dessert has an oat topping. | butterhearth.com

A comforting, budget-friendly dessert featuring sweet frozen fruit and a golden oat topping, perfect for using pantry and freezer staples.

I first made this fruit crisp when I had leftover frozen berries and oats that needed using. It was a hit for last-minute gatherings and a cozy treat that hardly took any effort.

Ingredients

  • Mixed frozen fruit: 6 cups (such as berries, peaches, or apples)
  • Granulated sugar: 1/3 cup (adjust to taste depending on fruit)
  • All-purpose flour or cornstarch: 2 tbsp
  • Lemon juice: 1 tbsp
  • Ground cinnamon (optional): 1/2 tsp
  • Old-fashioned rolled oats: 1 cup
  • All-purpose flour: 1/2 cup
  • Brown sugar: 1/2 cup, packed
  • Ground cinnamon: 1/2 tsp
  • Salt: 1/4 tsp
  • Unsalted butter: 1/2 cup, melted

Instructions

Preheat Oven:
Preheat the oven to 350°F (175°C).
Prepare Fruit Filling:
In a large bowl, toss the frozen fruit with sugar, flour or cornstarch, lemon juice, and cinnamon. Spread evenly into a 9x13-inch (or similar) baking dish.
Make Crisp Topping:
In another bowl, mix the oats, flour, brown sugar, cinnamon, and salt. Pour in melted butter and stir until clumps form.
Layer and Bake:
Sprinkle the oat mixture evenly over the fruit. Bake for 35 to 40 minutes or until the topping is golden brown and the fruit is bubbling.
Cool and Serve:
Let cool slightly before serving. Enjoy warm, optionally with vanilla ice cream or yogurt.
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| butterhearth.com

This crisp always reminds me of family weekends when we’d gather around the table and share warm desserts after dinner.

Required Tools

Large mixing bowl, measuring cups and spoons, baking dish (9x13-inch or similar), mixing spoon or spatula, oven

Allergen Information

Contains wheat (flour) and milk (butter). For gluten-free: Use certified gluten-free oats and a gluten-free flour blend. For dairy-free: Use a plant-based butter substitute. Always check ingredient labels if you have allergies.

Nutritional Information

Per serving: Calories 290, Total Fat 10 g, Carbohydrates 48 g, Protein 3 g

Golden-brown fruit crisp with frozen fruit, cinnamon, and a buttery oat crumble, ready to serve warm. Save
Golden-brown fruit crisp with frozen fruit, cinnamon, and a buttery oat crumble, ready to serve warm. | butterhearth.com

This fruit crisp makes an easy dessert any night of the week and tastes even better with a scoop of ice cream on top. Enjoy all year using frozen fruit from your freezer.

Recipe Questions

→ Can I use fresh fruit instead of frozen?

Yes, fresh fruit can be used but may require less sugar and a shorter baking time as it contains more moisture.

→ What type of oats work best for the topping?

Old-fashioned rolled oats provide a hearty texture that crisps nicely during baking compared to instant oats.

→ How can I make this dish gluten-free?

Use certified gluten-free oats and a gluten-free flour blend to replace all-purpose flour in both fruit and topping layers.

→ Is it possible to prepare this ahead of time?

You can assemble the dish and refrigerate it before baking, then bake fresh when ready to serve for best texture.

→ What are good dairy-free alternatives for the butter?

Melted coconut oil or vegan butter substitutes work well to maintain the topping’s richness without dairy.

Fruit Crisp Frozen Fruit Oats

A comforting dessert blending sweet frozen fruit and a golden oat topping in minutes.

Prep duration
10 min
Time to cook
35 min
Complete duration
45 min
Created by Grace Mitchell


Skill Level Easy

Heritage American

Output 6 Portions

Dietary considerations Meat-Free

Components

Fruit Filling

01 6 cups mixed frozen fruit (e.g., berries, peaches, apples)
02 1/3 cup granulated sugar
03 2 tablespoons all-purpose flour or cornstarch
04 1 tablespoon lemon juice
05 1/2 teaspoon ground cinnamon (optional)

Crisp Topping

01 1 cup old-fashioned rolled oats
02 1/2 cup all-purpose flour
03 1/2 cup packed brown sugar
04 1/2 teaspoon ground cinnamon
05 1/4 teaspoon salt
06 1/2 cup unsalted butter, melted

Directions

Stage 01

Preheat oven: Set the oven temperature to 350°F.

Stage 02

Prepare fruit filling: In a large bowl, combine frozen fruit with sugar, flour or cornstarch, lemon juice, and cinnamon. Toss gently to coat evenly.

Stage 03

Transfer fruit to baking dish: Spread the coated fruit mixture into a 9x13-inch baking dish evenly.

Stage 04

Mix crisp topping: In a separate bowl, combine oats, flour, brown sugar, cinnamon, and salt. Stir in melted butter until mixture forms clumps.

Stage 05

Add topping: Evenly sprinkle the oat mixture over the fruit layer.

Stage 06

Bake: Place the dish in the oven and bake for 35 to 40 minutes until the topping is golden brown and the fruit filling is bubbly.

Stage 07

Cool and serve: Allow the crisp to cool slightly before serving warm. Optional accompaniments include vanilla ice cream or yogurt.

Necessary tools

  • Large mixing bowl
  • Measuring cups and spoons
  • 9x13-inch baking dish
  • Mixing spoon or spatula
  • Oven

Allergy details

Review each component for potential allergens and consider consulting with a healthcare provider if you're unsure about certain ingredients.
  • Contains wheat (flour) and milk (butter). For gluten-free option, use certified gluten-free oats and flour. For dairy-free, use plant-based butter substitute.

Nutritional information (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy Value: 290
  • Fats: 10 g
  • Carbohydrates: 48 g
  • Protein Content: 3 g