Blueberry & Lemon Crisp

Featured in: Desserts

This vibrant dessert combines juicy blueberries with fresh lemon zest and juice, balanced by a golden oat crumble infused with cinnamon and brown sugar. It bakes until bubbling and crisp-topped, delivering a perfect mix of tartness and sweetness. Ideal for summer gatherings or cozy evenings, this easy-to-make dish offers a delightful burst of fresh flavors and comforting textures.

Updated on Tue, 11 Nov 2025 12:08:00 GMT
Freshly baked blueberry & lemon crisp, golden crumble atop bubbling berry filling.  Save
Freshly baked blueberry & lemon crisp, golden crumble atop bubbling berry filling. | cheerfulchefs.com

A vibrant, tangy-sweet dessert featuring juicy blueberries and bright lemon, topped with a golden, buttery oat crumble. Perfect for summer gatherings or a cozy night in.

This crisp has become a favorite in my family during warm months. I love how the topping turns golden and buttery while the filling bubbles with fruity goodness.

Ingredients

  • Fruit Filling: 4 cups fresh or frozen blueberries, 1 tablespoon finely grated lemon zest, 2 tablespoons fresh lemon juice, 1/3 cup granulated sugar, 2 tablespoons cornstarch, 1/8 teaspoon salt
  • Crisp Topping: 3/4 cup old-fashioned rolled oats, 1/2 cup all-purpose flour, 1/2 cup light brown sugar packed, 1/3 cup unsalted butter cold and diced, 1/4 teaspoon ground cinnamon, 1/4 teaspoon salt

Instructions

Preheat Oven:
Preheat the oven to 350°F (175°C).
Combine Fruit Filling:
In a large bowl, combine blueberries, lemon zest, lemon juice, granulated sugar, cornstarch, and salt. Toss until the berries are evenly coated.
Transfer Mixture:
Transfer the fruit mixture to a lightly greased 8-inch square baking dish or similar-sized ovenproof dish.
Prepare Topping:
In another bowl, combine oats, flour, brown sugar, cinnamon, and salt. Add the cold, diced butter and use your fingers or a pastry cutter to work the butter into the dry ingredients until the mixture resembles coarse crumbs.
Apply Topping:
Sprinkle the crisp topping evenly over the blueberry mixture.
Bake:
Bake for 35 to 40 minutes or until the topping is golden brown and the filling is bubbling around the edges.
Cool and Serve:
Let cool for at least 10 minutes before serving. Serve warm optionally with vanilla ice cream or whipped cream.
Delightful blueberry & lemon crisp cooling on the counter, ready to serve warm.  Save
Delightful blueberry & lemon crisp cooling on the counter, ready to serve warm. | cheerfulchefs.com

This dessert always brings back fond family memories of summer evenings spent together enjoying the sweet and tangy flavors.

Notes

Substitute half the blueberries with blackberries for a mixed-berry twist. For a gluten-free version use certified gluten-free oats and a gluten-free flour blend. Lemon zest adds brightness don't skip it. Store leftovers covered in the refrigerator for up to 3 days.

Required Tools

Mixing bowls, 8-inch square baking dish, pastry cutter or fork, measuring cups and spoons.

Allergen Information

Contains milk (butter), gluten (wheat flour oats if not certified gluten-free). Double-check oat and flour labels for gluten if serving to those with celiac disease.

Irresistible blueberry & lemon crisp topped with ice cream, perfect for summer nights. Save
Irresistible blueberry & lemon crisp topped with ice cream, perfect for summer nights. | cheerfulchefs.com

Enjoy this crisp fresh from the oven or warmed up the next day for a comforting treat.

Recipe FAQs

Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries work well and can be used directly without thawing. They will release more juice, so the filling may be slightly softer.

How can I make the topping more crunchy?

Using cold diced butter and not overmixing the topping helps create a crumbly, crisp texture. Baking until golden brown also enhances crunchiness.

Is there a gluten-free option for this dish?

Use certified gluten-free oats and replace all-purpose flour with a gluten-free flour blend to make it suitable for gluten-free diets.

Can I substitute blackberries for blueberries?

Absolutely. Replacing half the blueberries with blackberries adds a deeper berry flavor and a nice twist.

What is the best way to serve this dessert?

Serve warm, optionally topped with vanilla ice cream or whipped cream to complement the tangy fruit and buttery topping.

Blueberry & Lemon Crisp

Juicy blueberries and lemon with a buttery oat crumble for a vibrant, fruity treat.

Prep Time
15 minutes
Cook Time
35 minutes
Overall Time
50 minutes
Creator Ruby Smiles

Recipe Type Desserts

Skill Level Easy

Cuisine Background American

Portions 6 Serves

Dietary Preferences Vegetarian-Friendly

What You’ll Need

Fruit Filling

01 4 cups fresh or frozen blueberries
02 1 tablespoon finely grated lemon zest
03 2 tablespoons fresh lemon juice
04 1/3 cup granulated sugar
05 2 tablespoons cornstarch
06 1/8 teaspoon salt

Crisp Topping

01 3/4 cup old-fashioned rolled oats
02 1/2 cup all-purpose flour
03 1/2 cup packed light brown sugar
04 1/3 cup cold unsalted butter, diced
05 1/4 teaspoon ground cinnamon
06 1/4 teaspoon salt

Step-by-Step Guide

Step 01

Preheat oven: Preheat the oven to 350°F (175°C).

Step 02

Prepare fruit filling: In a large bowl, combine blueberries, lemon zest, lemon juice, granulated sugar, cornstarch, and salt. Toss gently until berries are evenly coated.

Step 03

Transfer filling: Place the fruit mixture into a lightly greased 8-inch square baking dish.

Step 04

Make crisp topping: In a separate bowl, mix oats, flour, brown sugar, cinnamon, and salt. Add cold diced butter and work it into dry ingredients using fingers or pastry cutter until coarse crumbs form.

Step 05

Assemble and bake: Evenly sprinkle the crisp topping over the fruit filling. Bake for 35 to 40 minutes until topping is golden and filling is bubbly.

Step 06

Cool and serve: Allow the dessert to cool for at least 10 minutes before serving warm. Optionally serve with vanilla ice cream or whipped cream.

Tools You’ll Need

  • Mixing bowls
  • 8-inch square baking dish
  • Pastry cutter or fork
  • Measuring cups and spoons

Potential Allergens

Inspect ingredients for specific allergens and contact a professional for concerns.
  • Contains milk (butter) and gluten (wheat flour, oats if not certified gluten-free)

Nutritional Details (Per Serving)

Provided as supportive info; always cross-check with your healthcare provider.
  • Calories: 265
  • Fats: 9 grams
  • Carbohydrates: 46 grams
  • Proteins: 3 grams