Get ready to fall head-over-heels for this Mars Cake that melts in your mouth! Imagine soft, fluffy cake layers soaked in chocolatey goodness, with chunks of real Mars bars melted right in—yes, we’re going there. Every bite is sweet, sticky, and oh-so-satisfying. It’s easy to make, dangerously delicious, and ideal for impressing your crew or just treating yourself after a long day. Trust me, this one’s a game-changer.
Table of Contents
Why You’ll Love This Recipe
- Melts-in-your-mouth texture from the Mars bar caramel swirl
- No-fuss ingredients, easy enough for beginner bakers
- Rich, nostalgic flavor from classic chocolate and nougat
- Perfect for dessert tables, birthdays, or lazy Sundays
- One bowl, no mixer needed—minimal mess, maximum flavor
Recipe Snapshot
Feature | Details |
---|---|
Category | Dessert |
Prep Time | 15 minutes |
Cook Time | 25–30 minutes |
Chill Time | Optional (10–15 mins) |
Servings | 9–12 squares |
Focus Keyword | Mars Cake |

Melty Mars Cake
Ingredients
Method
- In a saucepan over low heat, melt chopped Mars bars with butter. Stir until smooth and glossy. Let cool slightly.
- In a bowl, whisk eggs, brown sugar, and vanilla extract until fluffy. Slowly whisk in the melted Mars mixture.
- In another bowl, sift together flour, baking powder, and salt. Gradually fold into the wet mixture. Add milk and stir until smooth.
- Pour batter into a greased square baking pan. Bake at 350°F (175°C) for 25–30 minutes, or until a toothpick comes out with moist crumbs.
- Cool slightly before slicing. Optional: Chill for 10–15 minutes for cleaner slices.
Notes
How to Make Mars Cake
1. Melt the Mars Bars
In a saucepan over low heat, melt chopped Mars bars with a bit of butter. Stir constantly until smooth and glossy. Set aside to cool slightly—don’t skip this, or it’ll scramble your eggs later!
2. Mix the Wet Ingredients
In a bowl, whisk together eggs, sugar, and vanilla until light and fluffy. Slowly add in the melted Mars mixture while whisking. It’ll smell amazing already.
3. Combine Dry Ingredients
In another bowl, sift flour, baking powder, and salt. Gradually fold this into your wet mixture. Add milk a little at a time until you get a silky batter.
4. Bake It Up
Pour the batter into a greased square pan. Bake at 350°F (175°C) for 25–30 minutes or until a toothpick comes out clean with just a few crumbs. Let it cool slightly before slicing—it’ll still be gooey inside!
Pro Tips for the Best Mars Cake
- Use room temperature eggs and milk for a smoother batter.
- Don’t overmix! Just fold until everything’s incorporated.
- Line your pan with parchment for easy cleanup and prettier slices.
- Want extra gooeyness? Melt some more Mars bars and drizzle on top.
Flavor Variations
- Peanut twist: Add chopped roasted peanuts for crunch.
- Double chocolate: Mix in dark chocolate chips for extra depth.
- Salted caramel vibe: Sprinkle flaky sea salt on top while the cake is warm.
- Mocha Mars: Add a shot of espresso to the batter for a coffee-kissed version.
Serving Suggestions
- Serve warm with ice cream for a hot-cold flavor bomb.
- Drizzle with chocolate or caramel sauce for extra indulgence.
- Pair with coffee or hot cocoa on cozy nights.
Craving more chocolatey goodness? You have to check out our High Protein Lava Chocolate Mug Cake—it’s rich, gooey, and ready in minutes!
Make-Ahead & Storage
- Bake a day ahead—flavors intensify overnight!
- Cool completely and wrap tightly in plastic wrap or foil.
Leftovers
- Store in an airtight container at room temp for up to 3 days.
- Warm leftovers in the microwave for 10–15 seconds to revive that melty magic.
Freezing
- Wrap individual slices in plastic and freeze for up to 2 months.
- Thaw overnight at room temp or warm from frozen for a few seconds in the microwave.
Reheating
- Pop slices in the microwave for 10–20 seconds.
- Or reheat in the oven at 300°F (150°C) for 5–7 minutes.
FAQs
Can I use a different candy bar?
Yes! Snickers or Milky Way both work great, but keep in mind it’ll change the flavor and texture slightly.
Is it okay to leave out the eggs?
You can try using flax eggs or yogurt as a substitute, but the texture might be less fluffy.
Can I make this gluten-free?
Absolutely—just sub in a 1:1 gluten-free baking flour blend.
How do I keep it from getting too sweet?
Use dark chocolate Mars bars (if available) and don’t overdo the drizzle on top.
Can I try other chocolate cake recipes too?
Absolutely! Our Chocolate Cake Recipe is a fan favorite—super moist, easy to make, and perfect for any occasion.
Final Thoughts
This melty Mars Cake is pure dessert joy. It’s rich, indulgent, and a little nostalgic—like your favorite candy bar grew up into something even better. Whether you serve it warm with ice cream or sneak a square straight from the pan, it’s gonna hit that sweet spot every time. Make it once, and I promise: it’ll be on repeat.
Let me know if you try it—I’d love to hear how it turned out for you. 💛 Happy baking!