This blueberry crumble is full of that sweet, juicy goodness we all love! Whether you’re working with fresh blueberries or pulling some frozen ones from the freezer, this recipe is super easy to throw together with ingredients you probably already have. It’s so easy it’s one of those dangerously quick dessert recipes to have up your sleeve for whenever the craving strikes.

For more blueberry goodness, try your hand at a blueberry pie or blueberry scones.

Why Our Recipe

  • Full of that sweet sweet blueberry juicy goodness in every bite.
  • Made with simple ingredients and easy to throw together using fresh or frozen blueberries.
  • Lemon juice adds a little brightness that makes the berries pop!

A 9x13 pan filled with blueberry crumble dessert.

A little squeeze of lemon juice is used to brighten up the blueberries and really make the flavor pop. And let’s not forget that buttery, cinnamon crumble on topโ€”itโ€™s so good! It’s always hard to decide which one is better, the filling or the topping! Trust me, this dessert will be a hit with anyone lucky enough to grab a spoonful.

Ingredient Notes

  • Blueberries: Fresh or frozen both work great! If using frozen, there’s no need to thaw them first, but be sure to double the cornstarch to account for the extra liquid theyโ€™ll release.
  • Lemon Juice: Fresh lemon juice is best here, but bottled works too.
  • Sugar: You can adjust the amount slightly depending on how sweet your blueberries are.
  • Cornstarch: Essential for thickening the filling. If youโ€™re using frozen blueberries, double the amount to 4 tablespoons to avoid a watery crumble.
  • Ground Cinnamon: Adds a little cozy warm vibe, but if you’re not a fan, you can leave it out.
  • Vanilla Extract: Adds a smoothness to the sweet.
  • All-Purpose Flour: This is one of those rare baking desserts where you can use a flour alternative with no problem!
  • Brown Sugar: You can use light or dark brown sugar.
  • Butter: Make sure it’s cold and cubed so you get that perfect crumbly texture in the topping.

Fresh or Frozen Blueberries

This recipe works great with both fresh and frozen blueberries, so you can make it year-round! We know how it goes with blueberries that aren’t in season and aren’t on sale. If youโ€™re using fresh blueberries, just rinse and pat them dry before tossing them with the other ingredients. Fresh berries tend to hold their shape a bit better and give you a slightly firmer filling.

Frozen blueberries are just as tasty, especially when fresh berries arenโ€™t in season. You donโ€™t need to thaw them before using, but be sure to double the amount of cornstarch in the recipe to compensate for the extra moisture they release as they bake. The filling will still set perfectly, and youโ€™ll get all that juicy blueberry flavor!

Overhead view of a blueberry crumble.

Crumble Texture

For the best texture, make sure your butter is cold and straight from the fridge before you mix it in. You want to create a mixture thatโ€™s a bit chunkyโ€”some larger pieces of butter mixed with finer crumbs will give the topping that classic crumbly texture. If you prefer a finer crumble, you can break down the butter even more using a pastry cutter or your fingertips, but donโ€™t overdo it or youโ€™ll end up with a dough-like consistency instead of those lovely crumbs.

Storage & Reheating Instructions

Refrigerateย any leftover crumble in an airtight container for up to 3 days.

Reheat in the oven at 350ยฐF for 15-20 minutes, or until heated through and the topping is crisp again.

Reheat in the microwave: If youโ€™re in a hurry, you can reheat individual portions in the microwave. Microwave on high in 30-second increments until warmed through, but note that the topping may not stay as crisp.

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