Mars Bar Squares
What do you get when you melt chocolate bars and mix them with Rice Krispies? You get the delightful Mars Bar Squares! This no-bake treat is perfect for any occasion, whether it’s a birthday party, a family gathering, or simply a sweet indulgence after dinner. These squares are gooey, crunchy, and topped with smooth milk chocolate, making them absolutely irresistible. Plus, they come together in just a few simple steps!
Why You’ll Love This Recipe
- Quick to Prepare: With only 10 minutes of prep time, these squares are ready to chill while you unwind.
- No Baking Required: This recipe allows you to create delicious treats without turning on the oven.
- Perfect for Sharing: Cut into squares and serve at gatherings – everyone will want a piece!
- Customizable Toppings: Feel free to get creative with toppings like nuts or sprinkles for added texture.
- Family-Friendly Recipe: Kids love helping out in the kitchen with this easy-to-follow recipe.
Tools and Preparation
Before diving into the deliciousness of Mars Bar Squares, gather your tools. Having everything ready makes the process smoother and more enjoyable.
Essential Tools and Equipment
- Non-stick baking pan (8×8 inch/20×20 cm)
- Large saucepan
- Heatproof bowl
- Spatula
- Microwave-safe dish
Importance of Each Tool
- Non-stick baking pan: Ensures easy removal of your Mars Bar Squares once set.
- Large saucepan: Provides enough space for melting ingredients without overflow.
- Heatproof bowl: Ideal for melting chocolate safely without damaging it in the microwave.
Ingredients
For the Base
- 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 Pan
Lightly grease an 8×8 inch (20×20 cm) square baking pan to ensure that your Mars Bar Squares won’t stick.
Step 2: Melt the Butter
Add the unsalted butter to a large saucepan. Melt it gently over low heat until it’s fully liquid.
Step 3: Add Mars Bars
Once the butter is melted, add in the chopped Mars bars. Stir gently as they begin to melt together with the butter.
Step 4: Mix Until Smooth
Continue stirring until the mixture is smooth. If it starts separating, remove it from heat and whisk until combined.
Step 5: Incorporate Rice Krispies
Once melted, turn off the burner and stir in the Rice Krispies. Mix until all cereal is coated.
Step 6: Press into Pan
Spoon the mixture into your prepared pan. Use a lightly greased spatula or non-stick cooking spray on your hands to press down evenly.
Step 7: Melt Chocolate Topping
Add milk chocolate chips/chopped chocolate to a heatproof bowl. Microwave at medium power in 45-second intervals, stirring until smooth.
Step 8: Spread Chocolate Over Bars
Spread the melted chocolate over your pressed mixture. Allow it to sit at room temperature for about two hours or until hardened before slicing into squares.
Now you’re ready to enjoy your delicious homemade Mars Bar Squares!
How to Serve Mars Bar Squares
Mars Bar Squares are a delightful treat that can be enjoyed in various ways. Whether you’re celebrating a special occasion or just indulging in a sweet craving, serving them creatively can enhance the experience.
With a Scoop of Ice Cream
- Vanilla Ice Cream: The classic choice that perfectly complements the rich flavors of Mars Bars.
- Chocolate Ice Cream: For chocolate lovers, this pairing adds an extra layer of decadence.
- Caramel Swirl Ice Cream: Adds a sweet and salty note that pairs beautifully with the gooey texture.
Drizzled with Caramel Sauce
- Caramel Drizzle: A simple drizzle of warm caramel sauce enhances the sweetness and creates a beautiful presentation.
- Salted Caramel: Adds a touch of salt to balance the sweetness, making each bite more enjoyable.
Accompanied by Fresh Fruits
- Strawberries: Their tartness provides a refreshing contrast to the sweetness of the squares.
- Bananas: Sliced bananas offer creaminess and enhance the dessert’s indulgent nature.
- Raspberries: Their slight tartness brings a fresh burst of flavor to every bite.
As Part of a Dessert Platter
- Mini Cupcakes: Include small cupcakes for variety and color on your platter.
- Brownies: Rich, fudgy brownies make a great addition alongside Mars Bar Squares.

How to Perfect Mars Bar Squares
To ensure your Mars Bar Squares turn out perfectly every time, here are some helpful tips.
- Use Fresh Ingredients: Ensure your Mars bars and chocolate are fresh for the best flavor and texture.
- Melt Slowly: Melt the butter and Mars bars over low heat to prevent burning or separation.
- Press Firmly: When transferring to the pan, press down firmly to compact the mixture for solid squares.
- Let Set Properly: Allow the bars to set at room temperature until completely hardened before slicing for clean edges.
- Experiment with Toppings: Feel free to try different toppings such as nuts or sprinkles for added texture and flair.
Best Side Dishes for Mars Bar Squares
Mars Bar Squares can be complemented nicely with various side dishes that enhance their flavors. Here are some great options:
- Fresh Fruit Salad: A mix of seasonal fruits adds freshness and balances the sweetness of the squares.
- Chocolate Mousse: Rich and creamy mousse pairs well with crunchy Rice Krispies for an indulgent treat.
- Coffee or Espresso: A warm cup enhances chocolate flavors and provides a delightful contrast.
- Whipped Cream: Lightly sweetened whipped cream adds creaminess that contrasts with the crunchy texture.
- Cheese Platter: Include mild cheeses like brie or camembert; they provide a unique savory contrast.
- Nut Mix: A selection of salted nuts adds crunch and balances out the sweetness with savory notes.
Common Mistakes to Avoid
Making Mars Bar Squares can be simple, but there are common mistakes that can ruin the experience. Here are some pitfalls to watch for:
- Not greasing the pan: Failing to grease the baking pan can make it difficult to remove your squares. Lightly grease it before pouring in the mixture.
- Overheating the chocolate: Melting the chocolate too quickly can cause it to seize. Always melt on low heat and stir continuously for a smooth finish.
- Skipping the stirring: Neglecting to stir the mixture while melting can lead to uneven texture. Stir constantly until everything is well combined and smooth.
- Using stale Rice Krispies: Old or stale Rice Krispies will make your squares less crunchy. Always use fresh ingredients for the best texture and taste.
- Cutting too soon: Slicing into your Mars Bar Squares before the chocolate has set will result in messy bars. Allow at least 2 hours for cooling.

Storage & Reheating Instructions
Refrigerator Storage
- Store Mars Bar Squares in an airtight container.
- They can last up to one week in the refrigerator.
Freezing Mars Bar Squares
- Wrap individual squares tightly in plastic wrap or foil.
- Place them in a freezer-safe container; they can be frozen for up to three months.
Reheating Mars Bar Squares
- Oven: Preheat oven to 350°F (175°C) and warm for about 5-10 minutes until just soft.
- Microwave: Heat one square at a time on medium power for 10-15 seconds.
- Stovetop: Use a double boiler to gently warm, ensuring not to melt completely.
Frequently Asked Questions
Here are some common questions about making Mars Bar Squares:
Can I use other types of chocolate bars?
Yes, you can substitute with different chocolate bars like Snickers or Milky Way for unique flavors.
How do I make gluten-free Mars Bar Squares?
To make gluten-free squares, ensure you use certified gluten-free Rice Krispies.
What is the best way to cut Mars Bar Squares?
Use a sharp knife that has been warmed slightly under hot water for clean cuts.
How long do Mars Bar Squares last?
They will stay fresh in an airtight container for up to one week at room temperature or longer if refrigerated.
Final Thoughts
Mars Bar Squares are not only easy to prepare, but they also offer a delightful combination of gooey chocolate and crunchy Rice Krispies. This recipe is versatile, allowing you to customize by adding nuts or dried fruits as desired. Give these treats a try, and enjoy a sweet moment of indulgence!

Mars Bar Squares
- Total Time: 0 hours
- Yield: Approximately 16 servings 1x
Description
Indulge in the delightful taste of Mars Bar Squares, a no-bake treat that combines the rich flavors of melted chocolate bars with the satisfying crunch of Rice Krispies. Perfect for parties, family gatherings, or simply as a sweet after-dinner treat, these squares are effortlessly made in just a few simple steps. With their gooey texture and smooth chocolate topping, they are sure to be a hit with both kids and adults alike. Customize them with your favorite toppings, making them not only delicious but also visually appealing. Experience the joy of creating this easy dessert that promises to satisfy your sweet cravings!
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 large saucepan, melt the butter over low heat.
- Add chopped Mars bars to the melted butter and stir until smooth.
- Remove from heat and mix in Rice Krispies until well coated.
- Press the mixture into the prepared pan using a greased spatula.
- Melt milk chocolate chips in a heatproof bowl until smooth and pour over the pressed mixture.
- Allow to cool at room temperature for about two hours before slicing into squares.
- Prep Time: 10 minutes
- Cook Time: None
- Category: Dessert
- Method: No-Bake
- Cuisine: American
Nutrition
- Serving Size: 1 square (40g)
- Calories: 180
- Sugar: 12g
- Sodium: 50mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 22g
- Fiber: 0g
- Protein: 2g
- Cholesterol: 15mg