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Amazing Microwave Lemon Bars

Microwave Lemons Bars are perfectly sweet with loads of tart lemon flavor!
Course Dessert
Cuisine American
Keyword amazing microwave lemon bars, lemon bars
Prep Time 20 minutes
Cook Time 10 minutes
Total Time 30 minutes
Servings 25 squares
Calories 87kcal
Author Trish - Mom On Timeout



  • 1 cup all-purpose flour
  • 3 tbsp powdered sugar
  • 1 tbsp lemon zest zest from 1 lemon
  • 6 tbsp butter melted


  • 1 cup granulated sugar
  • 2 tbsp lemon zest zest from 2 lemons
  • 3 large eggs room temperature
  • 1/3 cup fresh lemon juice from your zested lemons
  • 1 tbsp all-purpose flour
  • 1/2 tsp baking powder
  • 1/4 tsp salt


  • Lightly grease a 9x9 inch microwave-safe baking dish OR line with parchment paper.


  • Whisk flour, sugar and lemon zest together.
  • Stir in melted butter.
  • Press crust into prepared dish.
  • Microwave for three minutes at 80% power. Check to make sure the crust is firm. If not, heat for an additional 30 seconds at 80% power.
  • Set aside.


  • Beat sugar, lemon zest, eggs, and lemon juice together.
  • Beat in flour, baking powder and salt and continue beating for 2-3 minutes.
  • Pour the filling over the crust and microwave for three minutes at 80% power. Check the filling. It should be set with just a little jiggle - much like JELLO. If it hasn't set, microwave for an additional minute at 80% power and check again.
  • Let the lemon squares cool completely and then refrigerate for several hours or overnight.
  • Cut into squares, dust with powdered sugar and sprinkle additional lemon zest on if desired.
  • Keep refrigerated.


Calories: 87kcal | Carbohydrates: 13g | Protein: 1g | Fat: 3g | Saturated Fat: 2g | Cholesterol: 27mg | Sodium: 55mg | Potassium: 26mg | Fiber: 1g | Sugar: 9g | Vitamin A: 114IU | Vitamin C: 2mg | Calcium: 10mg | Iron: 1mg