Blueberry Brownies are the recipe that Lucia makes every summer when she has the most beautiful abundance of fresh blueberries and wants to create the most completely extraordinary and most genuinely unexpected brownie that is so deeply vibrant in the most naturally gorgeous deep purple color and so completely authentic in blueberry flavor from real blueberries that have been blended and reduced to the most concentrated and most intensely colored and most deeply flavored blueberry reduction that gives these dense and gorgeous brownies their most completely extraordinary character without a single drop of food coloring or artificial flavoring anywhere in the recipe.
She blends the blueberries until smooth, simmers the puree down to half a cup of the most deeply concentrated and most beautifully colored reduction, folds it through the most simple melted butter and sugar and egg brownie batter, bakes until perfectly set, and finishes with the most silky and most simply beautiful vanilla powdered sugar glaze over the completely cooled brownies for the most completely extraordinary blueberry brownie that looks and tastes like summer in a square.
Blueberry Brownies are the most easy and deeply natural-color dense fudgy brownies made by blending 1 1/2 cups blueberries simmering to reduce to 1/2 cup puree folding into melted butter sugar eggs vanilla salt and sifted flour baked at 325°F for 35 to 40 minutes in an 8×8-inch pan topped with powdered sugar milk vanilla glaze. Come follow us on Pinterest where we share beautiful brownie recipes and easy summer baking favorites from our kitchen every single week.
Table of Contents
Why You Will Love This Blueberry Brownies Recipe

This Blueberry Brownies recipe is the most completely extraordinary and most genuinely natural summer brownie that produces the most dramatic and most beautifully stunning deep purple color from nothing beyond real blueberries — no food coloring, no artificial anything, just the most natural and most vibrant color that fresh blueberries produce when blended, reduced, and baked into the most dense and most fudgy brownie batter. Every person who sees these blueberry brownies on the table immediately stops and asks what they are before they have even reached for one.
The blueberry reduction technique is the single most important step in this entire recipe. Blending and then simmering the blueberry puree until it reduces to half a cup concentrates the most natural color and the most intensely real blueberry flavor to the most dramatic and most extraordinary level. Using whole blueberries without reducing would add too much water to the batter and produce a gummy rather than the most properly dense and most beautifully fudgy brownie texture. Our Chocolate Covered Strawberry Brownies make a beautifully equally fruity and equally fudgy companion for a complete and wonderful fruity brownie collection.
Ingredients Needed for This Blueberry Brownies Recipe
For the Blueberry Brownies:
- 1½ cups Fresh or Frozen (thawed) Blueberries
- 10 tbsp Unsalted Butter, melted
- 1¼ cups Granulated Sugar
- 2 large Eggs, room temperature
- ½ tsp Pure Vanilla Extract
- ½ tsp Sea Salt
- 1 cup All-Purpose Flour, sifted
For the Vanilla Glaze:
- 1 cup Powdered Sugar, sifted
- 2 tbsp Whole Milk
- ⅛ tsp Pure Vanilla Extract
- Pinch of Salt
How to Make This Blueberry Brownies Recipe
Blend the blueberries until completely smooth to form a puree. Pour the blueberry puree into a saucepan over medium-low heat. Gently simmer, stirring constantly, until the puree reduces to approximately half a cup of the most deeply concentrated and most vibrant blueberry reduction. Remove from heat and allow the reduction to cool completely before adding to the brownie batter, cara mia.
Preheat the oven to 325°F (163°C). Line an 8 by 8-inch glass baking dish with parchment paper.
In a medium bowl, combine the melted butter and granulated sugar. Stir in the room-temperature eggs, vanilla extract, and sea salt until the most uniformly combined and most consistent color mixture forms. Fold in the completely cooled blueberry reduction.
Gradually add the sifted flour to the wet mixture, stirring until just combined. Do not overmix once the flour is added — stir only until no dry flour streaks remain for the most properly dense and most beautifully fudgy brownie texture.
Pour the batter into the prepared baking dish and spread evenly. Bake on the middle rack for 35 to 40 minutes, checking at the 30-minute mark, until the center is set and a toothpick inserted in the center comes out clean or with a few moist crumbs. Allow to cool completely in the pan before glazing.
For the vanilla glaze, whisk together the sifted powdered sugar, milk, vanilla extract, and pinch of salt until the most smooth and most silky glaze forms. Spread half the glaze evenly over the completely cooled brownies. Allow to harden, then spread the remaining glaze and allow to harden again before cutting into 16 squares.
How to Serve This Blueberry Brownies Recipe
Serve at room temperature with a scoop of vanilla ice cream for the most completely extraordinary blueberry brownie dessert that combines the most vibrant natural purple brownie with the most beautifully cooling and most creamy vanilla ice cream contrast. The combination of the most densely blueberry-flavored brownie and the most smooth vanilla ice cream is genuinely one of the most completely perfect summer dessert pairings.
Present on a beautiful white plate for the most dramatically stunning presentation of the most naturally vibrant deep purple blueberry brownie squares that require absolutely no additional decoration to look completely and totally extraordinary. Our Oreo Brownies make a beautifully equally dense and equally fudgy companion for a complete and wonderful brownie collection.
How to Store This Blueberry Brownies Recipe
Store in an airtight container at room temperature for up to 3 to 4 days. The blueberry brownies stay most beautifully moist and most deeply flavored throughout the storage period. The blueberry flavor actually intensifies most beautifully during the first day of storage as the reduction flavor melds through the entire brownie. Do not freeze with the glaze as it does not freeze well.
Tips to Make This Blueberry Brownies Recipe

Sift the flour before measuring and adding to the batter for the most even and most properly light incorporation throughout the dense batter. Unsifted flour can produce small lumps that create uneven texture in the finished brownie.
Do not overmix the batter once the flour is added. Overmixing develops gluten and produces a tougher and less dense and fudgy result. Stir only until no dry flour streaks remain for the most properly dense and most gloriously fudgy blueberry brownie.
Helpful Notes for This Blueberry Brownies Recipe
Both fresh and frozen blueberries work equally well in this recipe. If using frozen blueberries, thaw them completely and drain any excess liquid before blending to prevent the final reduction from requiring excessive simmering time to reach the most properly concentrated consistency.
Apply the glaze in two separate layers — spreading half and allowing it to set fully before applying the second half — for the most beautifully thick and most dramatically defined glaze layer on top of each brownie square. A single thick glaze application does not set as cleanly as two thinner applications.
Variation of This Blueberry Brownies Recipe
Maria made a version adding a teaspoon of fresh lemon zest to the brownie batter alongside the cooled blueberry reduction for the most completely extraordinary lemon blueberry brownie that was beautifully bright and most deeply vibrant. Teresa tried adding a quarter cup of white chocolate chips folded through the batter for the most beautifully creamy and most deeply sweet-tart contrast against the most vibrant blueberry base.
For a lemon glaze version, substitute the vanilla glaze with a lemon glaze made from one cup powdered sugar and one to two tablespoons fresh lemon juice for the most completely bright and most vibrantly citrus-forward blueberry lemon brownie glaze. Our Lemon Rhubarb Bars make a beautifully equally fruity and equally naturally vibrant companion for a complete and wonderful fruit bar collection.
FAQs About This Blueberry Brownies Recipe
Why must the blueberry puree be reduced rather than used raw?
Blending the blueberries and then simmering the puree until it reduces to half a cup concentrates the natural color and blueberry flavor to the most dramatically vibrant and most deeply authentic level while simultaneously removing the excess water that would otherwise make the brownie batter too wet and gummy. The reduction is what produces the most naturally deep purple color and the most genuinely intense blueberry character in the finished brownie.
Do these blueberry brownies have chocolate or cocoa powder?
No. These blueberry brownies contain no chocolate, no cocoa powder, and no chocolate chips — which is why they are technically blondies rather than brownies, though blueberry brownies is far more intriguing and most accurately describes their densely fudgy brownie character. The deep purple color comes entirely from the natural blueberry reduction.
Can I add lemon zest to these blueberry brownies?
Yes. Fresh lemon zest stirred through the batter alongside the cooled blueberry reduction produces the most beautifully bright and most deeply sophisticated lemon blueberry brownie that elevates the most natural blueberry flavor with the most complementary citrus character. One teaspoon of fresh lemon zest is the most recommended starting point.
Conclusion
These Blueberry Brownies are the most completely extraordinary and most naturally vibrant summer brownie that makes every dessert table feel genuinely and completely special through the most deeply concentrated blueberry reduction and the most gorgeously natural deep purple color and the most silky vanilla glaze in every single dense and completely irresistible blueberry brownie square. We hope they bring the same deeply joyful summer blueberry moment and the same completely delighted gathering to your kitchen that they have always brought to ours. Make them, share them, and come back to tell us all about it. With all our love, Maria, Lucia, and Teresa.
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Blueberry Brownies The Most Easy Glazed Natural Deep Purple Dense Fudgy Blueberry Brownie You Will Bake
- Total Time: 1 hour 15 minutes including cooling
- Yield: 16 brownies 1x
- Diet: Vegetarian
Description
The most easy and naturally vibrant Blueberry Brownies made by blending 1 1/2 cups fresh or thawed blueberries smooth pouring into saucepan simmering over medium-low heat stirring constantly until reduced to 1/2 cup cooling completely then combining 10 tbsp melted butter 1 1/4 cups sugar 2 room temperature eggs 1/2 tsp vanilla and 1/2 tsp sea salt folding in cooled blueberry reduction gradually adding 1 cup sifted flour stirring just until combined spreading into parchment-lined 8×8-inch dish baking at 325°F for 35 to 40 minutes until toothpick shows few moist crumbs cooling completely then spreading vanilla glaze of powdered sugar milk vanilla and salt in two layers allowing each to harden before cutting into 16 squares. A completely extraordinary natural blueberry brownie recipe.
Ingredients
1 1/2 cups Fresh or Frozen thawed Blueberries
10 tbsp Unsalted Butter melted
1 1/4 cups Granulated Sugar
2 large Eggs room temperature
1/2 tsp Pure Vanilla Extract
1/2 tsp Sea Salt
1 cup All-Purpose Flour sifted
1 cup Powdered Sugar sifted for glaze
2 tbsp Whole Milk
1/8 tsp Pure Vanilla Extract for glaze
Pinch of Salt for glaze
Instructions
1. Blend blueberries until smooth puree.
2. Simmer puree in saucepan over medium-low heat stirring constantly until reduced to 1/2 cup. Cool completely.
3. Preheat oven to 325°F 163°C. Line 8×8-inch glass dish with parchment.
4. Combine melted butter and sugar in medium bowl.
5. Stir in room temperature eggs, vanilla, and sea salt until uniform.
6. Fold in completely cooled blueberry reduction.
7. Gradually add sifted flour stirring until just combined. Do not overmix.
8. Pour into prepared dish spreading evenly.
9. Bake middle rack 35 to 40 minutes checking at 30 minutes until center set and toothpick shows few crumbs.
10. Cool completely in pan.
11. Whisk glaze ingredients until smooth.
12. Spread half glaze over cooled brownies. Allow to harden.
13. Spread remaining glaze. Allow to harden.
14. Cut into 16 squares. Store in airtight container.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Dessert, Brownies, Summer
- Method: Baking, Stovetop
- Cuisine: American
Nutrition
- Serving Size: 1 brownie
- Calories: 210
- Sugar: 22g
- Sodium: 95mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 42mg
Keywords: blueberry brownies, easy glazed blueberry brownies recipe natural color no food coloring, best dense fudgy blueberry brownies reduced blueberry puree, natural purple blueberry brownies
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