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5 from 1 vote

Key Lime Gooey Bars

These Key Lime Gooey Bars are sure to become your new favorite! Fresh lime juice and zest are the secret ingredients!
Course Dessert
Cuisine American
Keyword key lime gooey bars
Prep Time 20 minutes
Cook Time 32 minutes
Total Time 52 minutes
Servings 16 bars
Calories 238kcal
Author Trish - Mom On Timeout


  • 15.25 oz Key Lime Cake Mix 1 box - I used Pillsbury
  • 4 oz unsalted butter 1 stick - softened
  • 1 egg room temperature
  • 1 lime zested and juiced
  • 2/3 cup white chocolate chips
  • 2/3 cup sweetened condensed milk
  • lemon and lime zest for top of bars if desired


  • Preheat oven to 350 degrees.
  • Line a 9x9 inch baking pan with foil. Spray with cooking spray and set aside.
  • Beat butter with a mixer until soft and fluffy.
  • Add in cake mix,egg, lime juice and zest and continue beating until combined.
  • Press about two-thirds of the cake mixture onto the bottom of the foil-lined baking pan.
  • Sprinkle white chocolate chips over the top.
  • Drizzle the sweetened condensed milk over the top of the chocolate.
  • Crumble the remaining cake mixture over the top of the sweetened condensed milk, trying to spread it out as much as possible. Press lightly.
  • Bake for 29-32 minutes, or until edges start to brown.
  • Let bars cool completely before cutting.
  • Top with additional lime and lemon zest if desired.
  • Store in an airtight container for up to a week.


Calories: 238kcal | Carbohydrates: 34g | Protein: 3g | Fat: 11g | Saturated Fat: 6g | Cholesterol: 31mg | Sodium: 215mg | Potassium: 94mg | Fiber: 1g | Sugar: 23g | Vitamin A: 226IU | Vitamin C: 2mg | Calcium: 115mg | Iron: 1mg