5 from 6 votes
Mars Bar Brownies
Mars Bar Brownies!
Prep Time
15 mins
Cook Time
25 mins
Cooling Time
1 hr
Total Time
1 hr 35 mins

Easy and Fudgey Mars Bar Brownies! So Chocolatey, So Delicious!

Course: Traybakes
Cuisine: Brownies
Keyword: Mars Bar
Servings: 16 Pieces
Calories: 392 kcal
Author: Jane's Patisserie
  • 200 g Dark Chocolate
  • 200 g Unsalted Butter
  • 3 Large Eggs (or 4 medium)
  • 275 g Light Brown Sugar
  • 100 g Plain Flour
  • 50 g Cocoa Powder
  • 300 g Mars Bar (chopped & frozen)
  • 100 g Milk Chocolate Chips (optional)
Optional Decoration
  • 50 g Milk Chocolate Melted
  • Mars Bar Pieces
  1. Preheat your oven to 180C/160C Fan and line a 9x9" baking tin with parchment paper!

  2. Melt together your Dark Chocolate and Unsalted Butter until smooth in the microwave or in a bowl over a pan of simmering water. Leave to cool for a few minutes

  3. Using an electric whisk/stand mixer, whisk your Eggs and Sugar together for 5 minutes or so on high speed, or until the mixture has doubled in volume, is alot paler, and leaves a trail for a few seconds when you lift the whisk out.

  4. Pour in the chocolate/butter mix and fold through very carefully.

  5. Add in the Flour and Cocoa Powder and fold through carefully again.

  6. Add in your frozen chunks of Mars Bar and chocolate chips and fold in. Pour the mixture into the tin and bake in the oven for 25-30+ minutes.

  7. Leave to cool in the tin, and then enjoy!

  8. To decorate your brownies if you fancy it... melt your chocolate and drizzle over the brownies, and add pieces of Mars Bar to each one! Set in the fridge, then chop up and enjoy!

Recipe Notes
Nutrition Facts
Mars Bar Brownies!
Amount Per Serving
Calories 392 Calories from Fat 198
% Daily Value*
Fat 22g34%
Saturated Fat 13g81%
Cholesterol 69mg23%
Sodium 60mg3%
Potassium 207mg6%
Carbohydrates 47g16%
Fiber 3g13%
Sugar 35g39%
Protein 5g10%
Vitamin A 410IU8%
Vitamin C 0.2mg0%
Calcium 66mg7%
Iron 2.7mg15%
* Percent Daily Values are based on a 2000 calorie diet.