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Stack of three blueberry lemon blondies with juicy burst blueberries and a glossy lemon glaze drizzle on a white surface

Blueberry Lemon Blondies with Royal Purple Glaze


  • Author: Samantha Brooks
  • Total Time: 45 minutes
  • Yield: 16 Squares 1x
  • Diet: Vegetarian

Description

A refreshing and sophisticated twist on the classic blondie. These bars feature a dense, fudgy texture infused with fresh lemon and bursting blueberries. The showstopper is a naturally vibrant ‘royal purple’ glaze made from frozen blueberry juice for a professional bakery finish.


Ingredients

Scale

The Lemon Blondie Base

  • 1 cup all-purpose flour
  • 3/4 cup granulated sugar
  • 1/2 cup unsalted butter, room temp
  • 1 large egg, room temp
  • 1 fresh lemon (zested and juiced to 1/4 cup)
  • 1 cup fresh blueberries
  • 1/4 tsp baking powder
  • 1/4 tsp salt

The Royal Purple Glaze

  • 1 cup powdered sugar, sifted
  • 1 heaping tbsp frozen blueberries
  • 2 tbsp fresh lemon juice

Instructions

Cream: Preheat oven to 350°F. Line an 8×8 pan with a parchment sling. Beat butter, sugar, and zest until fluffy. Mix in the egg.

Citrus: Stir in 1/4 cup lemon juice (mixture may look curdled).

Dry: Whisk flour, baking powder, and salt. Fold into wet ingredients until just combined.

Bake: Fold in fresh blueberries. Spread in pan and bake 25–30 mins until set. Cool completely.

Glaze: Pulse frozen berries and lemon juice; strain. Whisk 1 tbsp of this juice into powdered sugar. Spread over cooled bars and let set.

Notes

The Zest Secret: Rubbing lemon zest into sugar ruptures oil glands for maximum citrus aroma.

Frozen for Color: Frozen berries release deep purple pigments (anthocyanins) more easily because freezing breaks the cell walls.

The Sling Method: Use parchment overhang to lift the entire block out for clean, professional edges when slicing.

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert / Bars
  • Method: Creaming / Baking
  • Cuisine: Modern American

Nutrition

  • Serving Size: 1 Square
  • Calories: 190
  • Sugar: 18
  • Sodium: 45
  • Fat: 7
  • Saturated Fat: 4
  • Unsaturated Fat: 3
  • Trans Fat: 0
  • Carbohydrates: 30
  • Fiber: 1
  • Protein: 2
  • Cholesterol: 25

Keywords: blueberry lemon blondies, purple glaze dessert, lemon blueberry bars, fudgy fruit blondies, natural food coloring recipes, summer dessert bars, fresh lemon treats