Go Back
close up shot of brownies stacked on top of each other

Lemon Brownies

One bowl lemon brownies are light and delicious. Gooey and lemony, these dessert brownies are a refreshing citrusy dessert that is delightfully simple to make.
5 from 1 vote
Prep Time 15 mins
Cook Time 25 mins
Cool Time 1 hr
Total Time 1 hr 40 mins
Course Dessert
Cuisine American
Servings 9



  • ½ cup vegetable oil
  • 1 cup granulated sugar
  • 1 teaspoon lemon extract
  • 1 teaspoon vanilla extract
  • 1 zest lemon, 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 oven to 350°F. Line a 9x9 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 standing 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. Cut into pieces and serve.



  • Add more or less lemon juice/extract/zest to adjust the depth of lemon flavor in the brownies and/or the glaze.
  • The oil and the egg yolk (more fat) help produce a fudgier brownie.  The extra egg yolk also gives the brownie a bit more saturated yellow color.  You could always add food coloring for a more vibrant yellow brownie.
  • 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.