There’s something magical about a dessert that’s indulgent, effortless, and irresistibly delicious—especially when it requires zero baking and just five simple ingredients. This Mars Bar Cake is exactly that: a rich, chocolatey, crispy treat that feels like a nostalgic hug in every bite.
Whether you need a last-minute party dessert, a quick sweet fix, or a no-fuss recipe that always impresses, this no-bake delight is your answer. No oven, no complicated steps—just creamy Mars Bars, buttery crunch, and a smooth chocolate finish.
And the best part? You probably already have everything you need in your pantry. So, let’s make the kind of dessert that disappears faster than you can say… “Just one more slice!”
Table of Contents
Why You’ll Love This Mars Bar Cake
✅ No baking required – Just mix, chill, and enjoy.
✅ Only 5 ingredients – Simple, affordable, and pantry-friendly.
✅ Ready in 20 minutes – Perfect for last-minute cravings.
✅ Crispy, creamy, and chocolatey – The ultimate texture combo.
✅ Easy to customize – Add nuts, caramel, or extra chocolate.
The kind of dessert that disappears fast—guaranteed.
Ingredients for Mars Bar Cake
Here’s everything you’ll need for this irresistible no-bake treat, neatly organized for easy shopping and preparation:
| Ingredient | Quantity | Notes |
| Mars Bars (or Milky Way) | 4 bars (55g each) | Chopped into small pieces |
| Unsalted butter | ½ cup (115g) | Melted |
| Rice Krispies | 3 cups (90g) | Can substitute cornflakes |
| Milk or dark chocolate | 200g | Chopped or chocolate chips |
| Sweetened condensed milk | ½ cup (120ml) |
Optional Additions:
- Crushed peanuts or almonds
- Caramel sauce drizzle
- Sea salt flakes
- Shredded coconut
Storage Tip: Keep ingredients at room temperature except when noted. Chocolate melts best when chopped small.
This table format makes it easy to:
✓ Quickly check what you need
✓ See exact measurements
✓ Note possible substitutions
✓ Plan your shopping
Would you like me to adjust any quantities or include brand recommendations?
Step-by-Step Instructions (No-Bake Method)
This foolproof method delivers perfect results every time. Follow these simple steps for a decadent Mars Bar cake that requires zero baking and just 20 minutes of active prep:
Step 1: Prepare Your Pan
- Line an 8×8 inch (20×20 cm) square baking pan with parchment paper
- Lightly grease the paper with butter (prevents sticking)
Step 2: Melt the Base Ingredients
- Chop Mars Bars into small pieces (about ½-inch chunks)
- In a medium saucepan over low heat, melt together:
- Chopped Mars Bars
- Butter
- Sweetened condensed milk
- Stir constantly for 3-4 minutes until completely smooth
Pro Tip: Keep heat low to prevent scorching – the mixture should barely bubble
Step 3: Add the Crispy Element
- Remove from heat
- Immediately fold in Rice Krispies until evenly coated
- Transfer mixture to prepared pan
- Use a spatula to press down firmly and evenly
Step 4: Create the Chocolate Topping
- Melt chocolate (microwave or double boiler method):
- Microwave: 30-second bursts, stirring between
- Double boiler: Heat over simmering water
- Pour melted chocolate over pressed base
- Tilt pan to spread evenly
Step 5: Chill to Perfection
- Refrigerate for minimum 2 hours (4 hours ideal)
- For faster setting: Freeze for 1 hour
Step 6: Serve Like a Pro
- Lift out using parchment paper
- Cut into 16 squares with a hot knife (wiped clean between cuts)
- Serve chilled
Success Tips:
✓ Room temperature ingredients blend better
✓ Press base firmly to prevent crumbling
✓ For cleaner cuts: Score chocolate topping after 15 minutes of chilling
✓ Store leftovers in fridge for up to 5 days
Would you like me to add any specific troubleshooting tips or visual cues for each step?
Nutrition Facts (Per Serving)
Here’s the nutritional breakdown for this indulgent treat (based on 16 servings per batch):
| Nutritional Information | Per Serving | % Daily Value |
| Calories | 285 kcal | 14% |
| Total Fat | 15g | 19% |
| – Saturated Fat | 9g | 45% |
| Cholesterol | 25mg | 8% |
| Sodium | 120mg | 5% |
| Total Carbohydrates | 36g | 13% |
| – Sugars | 28g | 31% |
| Protein | 3g | 6% |
| Calcium | 60mg | 4% |
| Iron | 1.2mg | 7% |
Key Notes:
- Values are estimates only and may vary based on specific ingredients used
- Based on standard Mars Bar nutritional profile and USDA data
- Percent Daily Values based on a 2,000 calorie diet
- Contains: Milk, gluten, soy (from chocolate)
Dietary Considerations:
- For lower sugar: Use dark chocolate (85%+) and reduce condensed milk by 25%
- For gluten-free: Use certified GF crisp rice cereal
- For dairy-free: Substitute with plant-based butter and dairy-free chocolate
Would you like me to include alternative calculations for any dietary variations?
No-Bake Mars Bar Cake (5-Ingredient Wonder)
Ingredients
Main Ingredients
- 4 Mars Bars 55g each, chopped
- ½ cup 115g unsalted butter
- 3 cups 90g Rice Krispies
- 200 g milk or dark chocolate
- ½ cup 120ml sweetened condensed milk
Optional Add-Ins
- 2 tbsp crushed peanuts optional
- 1 tbsp caramel sauce optional
- Pinch of sea salt flakes optional
Instructions
- Step 1: Prepare Pan
- Line an 8×8 inch pan with parchment paper. Lightly grease with butter.
- Step 2: Melt Base
- In a saucepan over low heat, melt chopped Mars Bars, butter, and condensed milk. Stir until smooth (3-4 mins).
- Step 3: Add Crispies
- Remove from heat. Fold in Rice Krispies until coated. Press firmly into prepared pan.
- Step 4: Chocolate Topping
- Melt chocolate (microwave or double boiler), then pour over base. Tilt pan to spread evenly.
- Step 5: Chill
- Refrigerate 2+ hours (or freeze 1 hour for faster setting).
- Step 6: Serve
- Cut into 16 squares with a hot knife. Store leftovers in fridge.
Notes
| “For cleaner cuts, score chocolate topping after 15 minutes of chilling. Store in fridge for up to 5 days.” |
Pro Tips for the Perfect Mars Bar Cake
1. Ingredient Prep
✓ Chop Mars Bars small for smoother melting
✓ Use room temp butter for even blending
2. Texture Secrets
• Press base firmly to prevent crumbling
• For extra crunch, toast Rice Krispies first
3. Chocolate Perfection
- Add 1 tsp coconut oil to melted chocolate for glossier topping
- Let chocolate cool slightly before pouring to prevent base melting
4. Serving Like a Pro
✦ Dip knife in hot water for cleaner cuts
✦ Store between parchment layers to prevent sticking
5. Next-Level Upgrades
» Swirl caramel into chocolate topping
» Sprinkle sea salt flakes before chilling
Remember: The longer it chills, the cleaner it slices!
Would you like me to add any specific storage tips?
FAQ – Mars Bar Cake Recipe
1. Can I freeze Mars Bar cake?
✅ Yes! Freeze for up to 1 month. Thaw in the fridge before serving.
2. What can I use instead of Mars Bars?
✅ Milky Way or Snickers work well (adjust sweetness if needed).
3. Why is my cake too soft?
✅ Likely under-chilled—freeze for 30 minutes to firm up.
More questions? Drop them below!
Your New Go-To Dessert!
There you have it—the easiest, most decadent no-bake Mars Bar cake that delivers maximum flavor with minimal effort. Whether you need a:
• Last-minute party dessert
• Midweek treat
• Crowd-pleasing potluck contribution
This 5-ingredient wonder has you covered. With its perfect balance of chewy, crispy, and chocolatey goodness, it’s guaranteed to disappear fast!
Final Tip: Double the batch—you’ll thank yourself later. 😉
Now, who’s ready to grab a spoon and dig in? Tag us if you make it—we’d love to see your creations!
Author’s Top Picks for More No-Bake Treats
If you loved this Mars Bar Cake, you’ll adore these equally easy, decadent no-bake recipes from my kitchen:
🍰 Easy Biscoff Cake Recipe – A caramelized cookie butter dream with a creamy filling and crunchy crust. Perfect for Biscoff lovers!
🍫 Pot Brownie Recipe – For those who enjoy a special twist, these fudgy, cannabis-infused brownies deliver relaxation in every bite. (Enjoy responsibly!)
Both recipes share the same no-fuss, no-bake magic—just mix, chill, and indulge! Which one will you try next?