Mars Bar Squares
What do you get when you melt together chocolate bars and mix them with Rice Krispies? You create Mars Bar Squares! These no-bake treats are gooey, crunchy, and topped with smooth milk chocolate. Perfect for any occasion, they offer a delightful combination of flavors that will keep everyone coming back for more. Mars Bar Squares are not just delicious; they’re also quick and easy to make, making them an ideal dessert for busy days.
Why You’ll Love This Recipe
- Quick Preparation: In just 10 minutes of prep time, you can have these delicious squares ready to set.
- No-Bake Delight: No oven required means less hassle and more time to enjoy your treat.
- Versatile Treat: Perfect for parties, picnics, or as a sweet snack at home.
- Gooey and Crunchy Combo: The blend of melted Mars bars with Rice Krispies creates a delightful texture.
- Kid-Friendly Recipe: Easy enough for kids to help in the kitchen, making it a fun family activity.
Tools and Preparation
Before diving into the delicious process of making Mars Bar Squares, gather your essential tools. Having the right equipment makes the preparation smoother and more enjoyable.
Essential Tools and Equipment
- Saucepan
- 8×8 inch (20×20 cm) square baking pan
- Heatproof bowl
- Spatula
Importance of Each Tool
- Saucepan: This is essential for melting the butter and Mars bars evenly without burning.
- Baking Pan: A square pan ensures your Mars Bar Squares hold their shape and are easy to cut.
- Heatproof Bowl: Ideal for melting chocolate safely in the microwave without risk of damage.
Ingredients
For the Bars
- 1/2 cup unsalted butter
- 4 53-gram Mars bars (chopped)
- 3 cups Rice Krispies (aka Rice Bubbles)
For the Topping
- 1 cup milk chocolate chips (or chopped milk chocolate)
How to Make Mars Bar Squares
Step 1: Prepare Your Baking Pan
Lightly grease an 8×8 inch (20×20 cm) square baking pan to prevent sticking.
Step 2: Melt the Butter
Add the unsalted butter to a large saucepan. Gently melt the butter over low heat until completely liquefied.
Step 3: Add Mars Bars
Once melted, add the chopped Mars bars. Stir gently as they begin to melt into the butter.
Step 4: Mix Until Smooth
Continuously stir the mixture until it’s smooth. If you notice separation, remove from heat and whisk until fully combined.
Step 5: Combine with Rice Krispies
Turn off the burner. Stir in the Rice Krispies. Ensure they are evenly coated with the melted mixture.
Step 6: Press Mixture into Pan
Spoon the mixture into your prepared pan. Use a greased spatula or non-stick spray on your hands to press it down firmly.
Step 7: Melt Chocolate Topping
In a heatproof bowl, add the milk chocolate chips. Microwave on medium power in 45-second intervals, stirring between each until smooth.
Step 8: Top and Set
Spread the melted chocolate over your mixed bars. Let sit at room temperature for about two hours or until hardened before slicing into squares.
Enjoy your homemade Mars Bar Squares!
How to Serve Mars Bar Squares
Mars Bar Squares are deliciously rich and addictive, making them a perfect treat for various occasions. Here are some serving suggestions to elevate your dessert experience.
With a Scoop of Ice Cream
- Pairing these squares with a scoop of vanilla or chocolate ice cream creates a delightful contrast of flavors and temperatures.
At a Party Platter
- Cut the squares into bite-sized pieces and serve them on a platter for guests to enjoy at parties or gatherings.
As a Lunchbox Treat
- Pack these squares as a sweet surprise in lunchboxes; they are sure to brighten up anyone’s mid-day snack!
Dusted with Icing Sugar
- A light dusting of icing sugar on top adds an elegant touch while enhancing the sweetness of the Mars Bar Squares.
With Fresh Berries
- Serve alongside fresh strawberries or raspberries to add a refreshing burst of flavor that complements the chocolate perfectly.
Drizzled with Caramel Sauce
- A drizzle of warm caramel sauce elevates these squares by adding an extra layer of sweetness and richness.

How to Perfect Mars Bar Squares
To ensure your Mars Bar Squares turn out perfectly every time, consider these helpful tips.
- Use fresh ingredients – Ensuring your butter and chocolate bars are fresh will enhance the overall flavor and texture.
- Melt slowly – Melting the butter and Mars bars over low heat prevents burning and helps maintain smoothness.
- Press firmly – When spreading the mixture into the pan, press it down firmly to avoid air pockets for better texture.
- Cool completely – Allowing the squares to cool completely ensures that they set well, making them easier to cut into neat pieces.
- Store properly – Keep leftovers in an airtight container in a cool place to maintain freshness for as long as possible.
Best Side Dishes for Mars Bar Squares
To complement your indulgent Mars Bar Squares, consider serving them alongside these delightful side dishes.
- Fresh Fruit Salad – A mix of seasonal fruits adds brightness and balances the richness of the squares.
- Chocolate Mousse – A light, airy mousse can provide a contrasting texture while enhancing chocolate flavors.
- Creamy Custard – Warm custard pairs beautifully with the cold, firm squares, creating a comforting dessert option.
- Coffee or Espresso – A cup of strong coffee or espresso provides a bold contrast that enhances the sweetness.
- Whipped Cream – Lightly sweetened whipped cream adds creaminess and an airy touch when served alongside.
- Cheese Platter – A selection of mild cheeses can balance out the sweetness while offering savory notes.
- Mint Tea – A refreshing mint tea can cleanse the palate after enjoying your sweet treat.
- Nut Mix – A simple mix of nuts offers crunch and healthy fats, balancing out indulgence with nutritious bites.
Common Mistakes to Avoid
Making Mars Bar Squares can be a delightful experience, but there are some common pitfalls to watch out for.
- Not Greasing the Pan: If you forget to grease your baking pan, your squares may stick. Always light grease the pan to ensure easy removal.
- Overheating the Chocolate: Melting chocolate too quickly can lead to a grainy texture. Melt it slowly over low heat for the best results.
- Skipping the Stirring: Failing to stir while melting can cause separation of ingredients. Stir continuously for a smooth mixture.
- Using Old Ingredients: Stale Rice Krispies or expired chocolate can ruin your treat. Check freshness before starting.
- Cutting Too Soon: Cutting the squares before the chocolate has set leads to messy slices. Allow sufficient cooling time for neat portions.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 1 week.
- Keep in a cool spot away from direct sunlight.
Freezing Mars Bar Squares
- Wrap tightly in plastic wrap and place in a freezer-safe container.
- They can be frozen for up to 3 months.
Reheating Mars Bar Squares
- Oven: Preheat to 350°F (175°C) and warm for about 5-10 minutes until just soft.
- Microwave: Heat on medium power in 15-second intervals until slightly warm.
- Stovetop: Place on low heat in a covered pan for a few minutes, checking frequently.
Frequently Asked Questions
Here are some common questions about Mars Bar Squares that may help clarify any doubts you have.
How long do Mars Bar Squares last?
Mars Bar Squares can last up to one week when stored properly in the refrigerator.
Can I use other chocolate bars?
Absolutely! Feel free to experiment with other chocolate bars for different flavors and textures.
Are Mars Bar Squares suitable for freezing?
Yes, they freeze well! Just make sure they are wrapped securely before freezing.
What can I add to Mars Bar Squares?
You can add nuts, dried fruits, or even marshmallows for extra flavor and texture!
Final Thoughts
Mars Bar Squares are not only delicious but also incredibly versatile. You can customize them with your favorite ingredients to make them your own! Whether enjoyed as a snack or dessert, these treats are sure to bring joy and satisfaction. Give this easy recipe a try and indulge in these heavenly squares!

Mars Bar Squares
- Total Time: 0 hours
- Yield: 16 servings 1x
Description
Indulge in the delightful world of Mars Bar Squares! These no-bake treats combine the rich, gooey sweetness of melted Mars bars with the satisfying crunch of Rice Krispies. Topped with smooth milk chocolate, they create a heavenly dessert that’s perfect for any occasion. Whether it’s a family gathering, a picnic, or simply a sweet snack at home, these squares are quick and easy to make—ideal for busy days when you crave something delicious without the fuss.
Ingredients
- 1/2 cup unsalted butter
- 4 Mars bars (chopped)
- 3 cups Rice Krispies
- 1 cup milk chocolate chips
Instructions
- Lightly grease an 8×8 inch square baking pan.
- In a saucepan, melt the butter over low heat until liquefied.
- Add chopped Mars bars and stir gently until they melt into the butter.
- Mix until smooth; remove from heat if separation occurs.
- Stir in Rice Krispies until evenly coated.
- Press mixture firmly into the prepared pan using a greased spatula.
- In a heatproof bowl, melt milk chocolate chips in intervals, stirring until smooth.
- Spread melted chocolate over the mixture and let it set at room temperature for about two hours before slicing.
- Prep Time: 10 minutes
- Cook Time: None
- Category: Dessert
- Method: No-Bake
- Cuisine: Australian
Nutrition
- Serving Size: 1 square (45g)
- Calories: 180
- Sugar: 12g
- Sodium: 50mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 23g
- Fiber: 0g
- Protein: 2g
- Cholesterol: 15mg