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Amazing Microwave Lemon Bars

Microwave Lemons Bars are perfectly sweet with loads of tart lemon flavor!
Prep Time20 mins
Cook Time10 mins
Total Time30 mins
Course: Dessert
Cuisine: American
Keyword: amazing microwave lemon bars, lemon bars
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