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Lemon Brownies

close up shot of Lemon Brownies stacked on top of each other
Moist, lemony, and topped with a delicious glaze, these easy lemon brownies are a sweet and tart dessert that looks as pretty as it is yummy. 
Prep Time 15 mins
Cook Time 25 mins
Cool Time 1 hr
Total Time 1 hr 40 mins
Course Dessert
Cuisine American
Servings 9
Calories 311 kcal



  • ½ cup vegetable oil
  • 1 cup granulated sugar
  • 1 teaspoon lemon extract
  • 1 teaspoon vanilla extract
  • 1 lemon zest, about 2 teaspoons
  • 2 tablespoons fresh lemon juice
  • 2 large eggs plus 1 egg yolk, room temperature
  • 1 cup all-purpose flour
  • ½ teaspoon salt
  • ½ teaspoon baking powder


  • 1 cup powdered sugar
  • 2 tablespoons water
  • 1 teaspoon lemon extract
  • 1 teaspoon lemon juice, or more water
  • 1 to 2 teaspoons lemon zest, optional garnish


  • Preheat the oven to 350°F. Line a 9x9-inch square glass baking dish with parchment paper and set it aside.
  • Mix together oil and sugar in a large mixing bowl. Use a hand mixer or stand mixer to combine.
  • Beat in lemon extract, vanilla extract, lemon zest, and lemon juice. Add one egg at a time and then the egg yolk, mixing well between each one.
  • Stir together the flour, salt, and baking powder and add to the wet mixture.
  • Beat together 1 to 2 minutes until fluffy and well combined.
  • Spread batter into prepared baking dish. Bake for 25 minutes. Remove from the oven and allow to cool for 30 minutes before preparing glaze.
  • Whisk together the powdered sugar, water, lemon extract, and lemon juice until a smooth paste-like glaze forms.
  • Spread glaze over the brownies. Allow brownies to cool completely and the glaze will set so that it’s dry to the touch. Garnish with lemon zest.
  • Cut into pieces and serve.


  • The oil and the egg yolk help to produce an even thicker brownie. The extra egg yolk also gives the brownie a bit more saturated yellow color. You could always add food coloring for an even more vibrant-looking yellow brownie.
  • Add more or less lemon juice/extract/zest as you desire to adjust the depth of lemon flavor in the brownies and the glaze.
  • When mixing the glaze, add the liquid ingredients gradually to control the consistency of the glaze. Too much water/liquid will make a very runny and less opaque glaze. I like the white contrast to the brownie color, so I like the glaze to be more opaque and thick. The glaze is very sweet. Just a light glaze or even a drizzle would be great, too.


Sodium: 146mgCalcium: 19mgVitamin C: 2mgVitamin A: 60IUSugar: 35gFiber: 1gPotassium: 59mgCholesterol: 41mgCalories: 311kcalTrans Fat: 1gSaturated Fat: 10gFat: 13gProtein: 3gCarbohydrates: 47gIron: 1mg