What do you get when you melt together chocolate bars and mix them with Rice Krispies? You get the irresistible Mars Bar Squares! These no-bake treats are a delightful blend of gooey and crunchy textures, topped with creamy milk chocolate. Perfect for parties, afternoon snacks, or dessert cravings, these squares are sure to impress friends and family alike. Their unique combination of flavors makes them stand out and keeps everyone coming back for more.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Base
- For the Topping
- How to Make Mars Bar Squares
- Step 1: Prepare Your Pan
- Step 2: Melt Butter
- Step 3: Melt Mars Bars
- Step 4: Combine Until Smooth
- Step 5: Mix in Rice Krispies
- Step 6: Press into Pan
- Step 7: Melt Chocolate Topping
- Step 8: Add Topping and Set
- How to Serve Mars Bar Squares
- For Dessert Plates
- As Party Treats
- With Coffee or Tea
- How to Perfect Mars Bar Squares
- Best Side Dishes for Mars Bar Squares
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Mars Bar Squares
- Reheating Mars Bar Squares
- Frequently Asked Questions
- Can I use other chocolate bars instead of Mars bars?
- How do I cut my Mars Bar Squares neatly?
- Are Mars Bar Squares gluten-free?
- What should I do if my mixture is too sticky?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Quick and Easy: With just a few ingredients and minimal prep time, making Mars Bar Squares is a breeze.
- No Baking Required: This recipe is perfect for those who want a delicious treat without the hassle of turning on the oven.
- Crowd-Pleaser: The rich chocolatey flavor combined with Rice Krispies appeals to both kids and adults, making it a great choice for gatherings.
- Versatile Treat: You can customize this recipe by adding nuts or different types of chocolate to suit your taste.
- Store Well: These squares keep well in an airtight container, making them perfect for meal prep or snacking throughout the week.
Tools and Preparation
Before diving into the deliciousness of Mars Bar Squares, gather your essential tools. Having everything ready will make the process smooth and enjoyable.
Essential Tools and Equipment
- 8×8 inch square baking pan
- Large saucepan
- Heatproof bowl
- Spatula
- Microwave
Importance of Each Tool
- Baking Pan: The 8×8 inch pan is ideal for creating perfectly sized squares that are easy to cut and serve.
- Large Saucepan: A sturdy saucepan allows you to melt ingredients evenly, ensuring a smooth mixture.
- Heatproof Bowl: Necessary for melting chocolate without risking burns or damage to other bowls.
- Spatula: Great for mixing ingredients thoroughly and pressing down the mixture into the pan.
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 prevent sticking.
Step 2: Melt Butter
Add the butter to a large saucepan. Gently melt over low heat until fully liquefied.
Step 3: Melt Mars Bars
Add the chopped Mars bars to the melted butter. Stir gently as they begin to melt together.
Step 4: Combine Until Smooth
Continuously stir until you have a smooth mixture. If you notice separation, remove from heat and whisk until combined well.
Step 5: Mix in Rice Krispies
Once melted, turn off the burner. Stir in the Rice Krispies/Rice Bubbles, ensuring they are evenly coated.
Step 6: Press into Pan
Spoon the mixture into your prepared pan. Press it down firmly using a greased spatula or non-stick cooking spray on your hands to avoid sticking.
Step 7: Melt Chocolate Topping
In a heatproof bowl, add your milk chocolate chips. Microwave on medium power in 45-second intervals, stirring each time until almost melted. Stir until completely smooth.
Step 8: Add Topping and Set
Spread the melted chocolate over your prepared base. Allow it to sit at room temperature for about two hours until hardened before slicing into squares.
Enjoy these delightful Mars Bar Squares—a treat that’s sure to satisfy any sweet tooth!
How to Serve Mars Bar Squares
Mars Bar Squares are a delightful treat that can be enjoyed in various ways. Their rich, chocolatey flavor and crunchy texture make them a versatile dessert for any occasion. Here are some creative serving suggestions to elevate your experience.
For Dessert Plates
- Serve with Ice Cream: Pairing Mars Bar Squares with a scoop of vanilla or chocolate ice cream adds a creamy contrast that enhances the dessert’s richness.
- Top with Whipped Cream: A dollop of freshly whipped cream on top can add a light, airy texture to each bite.
As Party Treats
- Cut into Bite-Sized Pieces: For gatherings, cut the squares into smaller portions to allow guests to enjoy them as finger foods.
- Decorate with Sprinkles: Adding colorful sprinkles on top can make these treats visually appealing and fun for kids’ parties.
With Coffee or Tea
- Pair with Hot Beverages: Serve alongside coffee or tea for a sweet afternoon treat that balances the bitterness of these drinks.
- Add a Dusting of Cocoa Powder: For an elegant touch, lightly dust the squares with cocoa powder before serving.

How to Perfect Mars Bar Squares
To ensure your Mars Bar Squares turn out perfectly every time, consider these helpful tips. Following these simple steps will help achieve a gooey and crunchy texture that’s hard to resist.
- Use Fresh Ingredients: Ensure your Mars bars and chocolate chips are fresh for the best flavor.
- Melt Slowly: Gently melt the butter and chocolate over low heat to avoid burning and achieve a smooth mixture.
- Press Firmly: When transferring the mixture to the baking pan, press it down firmly but gently for an even texture throughout.
- Cool Completely: Allow the squares to cool completely at room temperature before slicing for clean cuts and better presentation.
- Store Properly: Keep leftover squares in an airtight container at room temperature for up to one week to maintain freshness.
Best Side Dishes for Mars Bar Squares
While Mars Bar Squares are delicious on their own, pairing them with side dishes can enhance your dessert experience. Here are some great suggestions:
- Fresh Fruit Salad: A mix of seasonal fruits adds a refreshing contrast to the sweetness of the squares.
- Cheese Platter: Offering assorted cheeses provides savory flavors that balance the sweetness of Mars Bar Squares.
- Chocolate Dipping Sauce: Serve warm chocolate sauce on the side for those who want an extra indulgence.
- Nutty Granola: A side of crunchy granola can add texture and a healthy element alongside these rich treats.
- Caramel Sauce: Drizzling caramel sauce over each square can take your dessert to another level of sweetness.
- Yogurt Parfait: Layer yogurt with fruit and granola for a lighter option that complements the richness of Mars Bar Squares.
Common Mistakes to Avoid
When making Mars Bar Squares, it’s easy to make a few common mistakes. Here are some pitfalls to watch out for.
- Skipping the greasing step: Always grease your baking pan. If you skip this, your squares may stick and be hard to remove.
- Using high heat: Melting the Mars bars too quickly can cause them to separate. Always melt on low heat for a smooth texture.
- Overmixing the Rice Krispies: Stir gently when adding Rice Krispies. Overmixing can lead to a dense texture instead of the desired crunch.
- Not letting the chocolate set: Patience is key! Allow the chocolate layer to set completely before slicing, ensuring clean cuts and perfect squares.
- Ignoring storage tips: Store your squares correctly in an airtight container. This prevents them from becoming stale or losing their deliciousness.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftover Mars Bar Squares in an airtight container.
- They can last up to 1 week in the refrigerator.
Freezing Mars Bar Squares
- Wrap individual squares tightly in plastic wrap.
- Place them in a freezer-safe container for up to 3 months.
Reheating Mars Bar Squares
- Oven: Preheat to 350°F (175°C) and warm for about 5-10 minutes for a fresh taste.
- Microwave: Heat one square at a time for about 10-15 seconds until slightly warm.
- Stovetop: Use a non-stick pan over low heat, warming each square for about 1-2 minutes.
Frequently Asked Questions
Here are some common questions about Mars Bar Squares that might help you while making this delightful treat.
Can I use other chocolate bars instead of Mars bars?
Yes, you can substitute with other chocolate bars like Snickers or Milky Way for different flavors.
How do I cut my Mars Bar Squares neatly?
Use a sharp knife and warm it slightly under hot water before cutting. This helps avoid crumbs and ensures clean slices.
Are Mars Bar Squares gluten-free?
Yes, if you use gluten-free Rice Krispies, these treats can be gluten-free!
What should I do if my mixture is too sticky?
If the mixture sticks, lightly oil your hands or spatula when pressing it into the pan.
Final Thoughts
Mars Bar Squares are not only an easy no-bake treat but also incredibly versatile. You can customize them by adding nuts or dried fruits if desired. Try making these delicious squares today; they’re sure to satisfy any sweet craving!
Did You Enjoy Making This Recipe? Please rate this recipe with ⭐⭐⭐⭐⭐ or leave a comment.
📖 Recipe Card
PrintMars Bar Squares
Indulge in the delightful taste of Mars Bar Squares, an irresistible no-bake treat that combines gooey chocolate with the satisfying crunch of Rice Krispies. These easy-to-make squares are perfect for any occasion—be it a party, afternoon snack, or a sweet craving. With just a handful of ingredients and minimal prep time, you can whip up these delicious chocolatey bites that will impress friends and family alike. The creamy milk chocolate topping adds an extra layer of decadence, making them a favorite among both kids and adults. Enjoy them as they are or customize with your choice of nuts or other chocolates for a personal touch.
- Prep Time: 15 minutes
- Cook Time: 10 minutes
- Total Time: 25 minutes
- Yield: Approximately 16 servings 1x
- Category: Dessert
- Method: No-Bake
- Cuisine: Global
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 baking pan.
- Melt butter in a large saucepan over low heat.
- Stir in chopped Mars bars until melted and smooth.
- Remove from heat and mix in Rice Krispies until evenly coated.
- Press the mixture firmly into the prepared pan.
- Melt chocolate chips in a heatproof bowl, then spread over the base.
- Allow to set at room temperature for 2 hours before slicing into squares.
Nutrition
- Serving Size: 1 square (40g)
- Calories: 170
- Sugar: 11g
- Sodium: 50mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 20g
- Fiber: <1g
- Protein: 1g
- Cholesterol: 10mg





