Easiest Blueberry Crisp Dessert Using Frozen Blueberries

by Texas Homesteader ~ 

This blueberry crisp recipe features a thick sweet blueberry filling topped with a crispy buttery oat crust. It’s a simple recipe that’s easy enough for a regular weeknight dessert but special enough for company.

My simple blueberry crisp recipe uses frozen blueberries and a buttery crispy crust. #TexasHomesteader

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I enjoy a good fruit crisp. And I love blueberries. This simple blueberry crisp dessert is the best of both worlds. 

What Is A Fruit Crisp Dessert?

A fruit crisp is similar to a cobbler, but with a crumbly crispy topping of oats usually mixed with brown sugar and butter.

It bakes into a deliciously sweet thickened fruit filling topped with a crispy buttery oat crust.

What’s The Difference Between A Crisp & A Crumble?

Depending on who you ask, some may use the term crisp or crumble almost interchangeably.

I believe technically a crisp is the proper term when the dessert includes oats in the topping. But no matter what you call it – this blueberry crisp recipe is amazingly delicious.

What Ingredients Are In A Blueberry Crisp?


    • Blueberries – obvs!
    • Granulated Sugar – adds sweetness & body
    • All-Purpose Flour – for thickening
    • Lemon Juice & Zest – to aid in thickening & add a touch of lemon flavor
    • Vanilla Extract – Gotta love a hint of vanilla!


    • Oats – the body of the crispy topping
    • Softened Butter – encourages browning & crispiness
    • Brown Sugar – for sweetness with a molasses touch
    • All-Purpose Flour – to add crispness
    • Cinnamon – a fave with many desserts
    • Chopped Nuts – optional but adds a nice nutty crunch

Easiest Blueberry crisp made with frozen blueberries and a buttery oat topping. #TexasHomesteader

Can You Use Frozen Fruit In Your Fruit Crisp?

I most often freeze my blueberries so I can use them all year long. So when I make blueberry crisp I almost always use frozen berries. It turns out perfectly.

Baker’s Note: Keep in mind that frozen fruit can release lots of moisture when it’s cooked. So if a recipe calls for only fresh fruit or berries you’ll want to follow the recipe to keep your filling from being too watery.

But you’re in LUCK! This recipe actually gives you the frozen-blueberry shortcut!

How To Make A Blueberry Crisp?

In 2-Quart Baking Dish (about 8″x8″) make the fruit filling:

Make Filling 

Toss frozen blueberries with lemon zest, lemon juice & vanilla extract.

Mix flour & sugar, sprinkle over blueberries, then fold to coat

Make Topping:

In a separate bowl make the topping:

Mix butter, brown sugar, oats, flour, cinnamon & nuts (if using)

Sprinkle topping over blueberry mixture.


Place in 375°F oven & bake 35-40 minutes, or until top is nicely brown and filling is bubbly.

This simple blueberry crisp or crumble is made even easier by using frozen blueberries. #TexasHomesteader

The complete printable recipe is below!

Why You’ll Love This Recipe

Taste – The thick sweet blueberry filling topped with a crispy buttery oat topping is sure to please.

Fast – Only 10 minutes or so of hands-on time and a delicious dessert is on the table fast.

Simple – I typically use frozen blueberries for this crisp – no need to thaw! 

Inexpensive – I love fresh blueberries, but frozen berries are often cheaper than their fresh counterparts. 

Flexible – Since you’re using frozen berries you can enjoy this crisp all year long!

What Kind Of Fruit Can You Use In A Crisp?

You can use various fruits or berries for a fruit crisp, or even mix two or more! Our favorite fruits to bake into a crisp are:





Why Is My Fruit Crisp Topping Soggy?

Too Much Butter– Yeah, I’ve done it too. I’ve gotten carried away with the butter when making the topping thinking it would make it even more buttery.

But all it did was make it soggy. Too much moisture in your crisp is a soggy topping waiting to happen. So it’s best to stick to the recipe.

Locking In Steam – If you’ll be covering your baked crisp, make sure it’s thoroughly cool first. If it’s warm steam will collect on the lid and drop onto your crisp topping, guaranteeing a soggy result.

Improper Reheating – A microwave encourages moist heat, an oven encourages drier heat. So if you’re heating up leftover crisp and want to maintain that amazing crispy topping, opt for oven reheating.

Changing A Recipe – Frozen fruit releases lots of moisture when it’s cooked. So if a recipe calls for fresh fruit or berries you should use only fresh since the recipe has not made allowances for the extra moisture frozen fruit or berries will have. If a recipe references frozen fruit you should be fine to use frozen.

Other Favorite Desserts

If you love this blueberry crisp you’ll love these favorite Homestead Kitchen desserts too!

No-Bake Lemon Ice Box Pie

Peach Cobber Baked In Cast Iron

Mason-Jar Cheesecake

A complete list of our favorite desserts follows this post. Check them out! But without further adieu, here is the easiest recipe for blueberry crisp ever. Enjoy!

Did you make this easy Blueberry Crisp? Please rate the recipe in your comment below!

Easiest Blueberry crisp made with frozen blueberries and a buttery oat topping. #TexasHomesteader
5 from 1 vote

Easiest Blueberry Crisp Using Frozen Blueberries

You'll love this easy blueberry crisp with thick blueberry filling and a buttery oat crust. This recipe can be enjoyed all year long because it uses frozen blueberries. And frozen berries are cheap! Only 10 minutes hands-on time for a dessert your family will love. #TexasHomesteader

Course Dessert
Cuisine American
Keyword berries, blueberry, crisp, frozen fruit, fruit
Prep Time 10 minutes
Cook Time 35 minutes
Servings 6 people
Author www.TexasHomesteader.com



  • 5 cups frozen blueberries
  • 2 tablespoons sugar
  • 3 tablespoons flour
  • 1/2 lemon zested & juice extracted (about 2 teaspoons zest, 2 tablespoons juice)
  • ½ tsp vanilla extract


  • ¾ cup brown sugar, (can add up to ¼ cup more for a sweeter oat topping)
  • ½ cup all-purpose flour
  • ½ teaspoon cinnamon
  • 1 ½ cup rolled oats
  • ½ cup 1 stick or 4 oz butter, softened
  • 1 cup chopped nuts optional


  1. Preheat the oven to 375°F.
  2. In a small bowl mix 2 tablespoons sugar and 3 tablespoons flour. Set aside.
  3. In a 2-quart 8”x8” baking dish add 5 cups frozen blueberries, the zest and juice of half a lemon & ½ teaspoon vanilla extract.
  4. Sprinkle granulated sugar/flour mixture evenly over blueberries and fold to completely coat blueberries. Set aside.

  5. In separate container combine ¾ cup brown sugar (can add up to ¼ cup more brown sugar for a sweeter crust), ½ cup flour, ½ teaspoon cinnamon, 1½ cup oats, 1 stick (1/2 cup) softened butter, and 1 cup nuts (if using). Mix until crumbly. Sprinkle dry mixture evenly over blueberries.

  6. Bake 35-40 minutes or until the top is golden brown and the filling is bubbly. Cool slightly and serve warm. (The filling continues to thicken as it cools.)

Recipe Notes

This recipe fills a 2-quart casserole dish, but as the blueberries cook they'll bubble up slightly and then reduce. So there should be plenty of room for your blueberry crisp!

This post categorized in  

Tagged in Our favorite blueberry recipes and posts. #TexasHomesteader    Our favorite dessert recipes and posts. #TexasHomesteader    A list of our posts about cooking with the garden's harvest. #TexasHomesteader        

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4 thoughts on “Easiest Blueberry Crisp Dessert Using Frozen Blueberries

  1. Angela DeGroot

    Had this in my email finally got to read it – looks easy and tasty. I have lots of frozen fruit from my mom’s garden and so this will be a good one to pull out when need a quick dessert.

    1. Texas Homesteader Post author

      My dad loves blueberries, so I often whip this up when we invite him to join us for supper. It’s delicious, and simple dessert recipes go over well in my kitchen! ~TxH~

  2. Jimmy P

    5 stars
    Just curious if you have any idea of how to substitute fresh milled wheat berries for this? I’ve found that north American flour has, more often than not, contamination of herbicides like glyphosate and I react very poorly to it. Unfortunately, there’s not really an effective way to test for it, and the “organic” producers are self reporting and don’t mention that they use glyphosate as a desiccant at the end of the growing season to increase crop yield, so “organic” flour ends up being just as bad as the regular.

    TLDR; I’m growing my own wheat to ensure it’s clean and truly organic. Any idea how to adjust the recipe for whole grain (not whole wheat). This makes it more nutritious and healthier too!

    1. Texas Homesteader Post author

      I’ve never grown, milled nor cooked with wheat berries, so I’m just not sure. But I’d assume whatever method you use to replace flour with milled wheat berries for other recipes would be the same here. ~TxH~


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