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If you’ve ever dreamed of biting into a soft, chewy cookie only to hit gooey, melted chocolate inside, then these Mars Bar stuffed cookies are about to be your new obsession. They combine buttery cookie dough with caramel-filled Mars bites in the center for the ultimate sweet treat. Each one is like a mini surprise, crispy on the outside and molten in the middle. Make them for parties, bake sales or just because you have a sweet tooth, and they’ll disappear fast.

Chocolate-drizzled cookies on a striped cloth with chocolate chunks scattered around, made with fun size chocolate bars for an extra indulgent treat.

These Mars Bar stuffed cookies are soft and chewy on the outside with a gooey, melted candy center. They’re simply perfect for any chocolate and caramel lover.

Also try Oreo cookies, apple butter cookies, homemade granola, or these chocolate chip Reese’s stuffed cookies.

A chocolate chip cookie broken in half, revealing melted chocolate and gooey filling inside—a tasty stuffed cookie perfect for anyone searching for the ultimate stuffed cookie recipe.

Why You’ll Love It

Soft and chewy: The cookie dough bakes up with crisp edges and a soft center.
Surprise inside: Each bite hides a molten Mars Bar for maximum indulgence.
Crowd-pleaser: Great for parties, holidays or gifting.
Easy to make: You only need simple ingredients and a few basic steps.
Make-ahead friendly: The dough can be chilled and baked later.

A tasty stuffed cookie drizzled with dark chocolate rests on a cloth, with more cookies in the background, each made with fun size chocolate bars for an irresistible treat.

A complete list of ingredients and amounts can be found in the recipe card below.

Butter: Adds moisture and richness for a tender cookie texture.
Granulated sugar: Gives structure and sweetness to the cookies.
Brown sugar: Adds moisture and a light caramel flavor.
Eggs: Help bind the dough and contribute to a chewy texture.
All purpose flour: The base that gives the cookies structure.
Leavening agents: Baking soda and baking powder help the cookies rise and spread.
Mars Bars: Gooey centers of chocolate, nougat and caramel that melt perfectly inside each cookie. You can use standard bars, mini bars or the little Mars Bar bites. Bites are the easiest as they’re the right size to add without chopping.

Baking ingredients including flour, butter, sugar, eggs, and measuring spoons on a towel—perfect for learning how to make stuffed cookies or Mars Bar stuffed cookies made with fun size chocolate bars.

How to Make Mars Bar Filled Cookies

For more detailed instructions with weights and measurements, jump to the printable recipe card.

Mix the dry ingredients: Combine flour, baking soda and baking powder in a bowl.
Cream the butter and sugars: Beat until light and fluffy, then add eggs.
Combine and chill: Add dry ingredients, mix, and refrigerate the dough.
Assemble the cookies: Scoop dough, press a Mars Bar bite in the center and cover with more dough.
Bake and cool: Bake until golden, then let them cool.

A stack of cookies drizzled with melted chocolate sits on a light-colored surface, perfect for anyone craving a tasty stuffed cookie or searching for the best stuffed cookie recipe.

Substitutions and Variations

Use different candy: Swap Mars Bars for Snickers, Milky Way or Rolos.
Add texture: Mix chopped nuts or mini chocolate chips into the dough.
Make it gluten free: Use a 1:1 gluten free flour blend.
Chill overnight: For even deeper flavor and better structure.

Chocolate-drizzled cookies stacked and scattered on a cloth, surrounded by chocolate pieces—perfect inspiration if you're searching for a stuffed cookie recipe or wondering how to make stuffed cookies at home.

Serving Suggestions

With a drink: Pair these Mars Bar stuffed cookies with your favorite drink. They’re great with anything from a magic color-change lemonade or Italian cream soda to a banana smoothie.
After dinner: Enjoy a delicious dinner of spaghetti pie or baked salmon with Greek salsa before serving up these tasty homemade cookies.

A close-up of a tasty stuffed cookie with a gooey peanut butter center and chocolate drizzled on top, made with fun size chocolate bars.

How to Store Mars Bar Stuffed Cookies

Store: Keep the cookies in an airtight container at room temperature and eat within 2 to 3 days.
Freeze: You can freeze the dough before baking or freeze the finished cookies for up to a month.
Thaw: Defrost at room temperature.
Reheat: If you want to enjoy these warm, give them 10 seconds in the microwave.

Close-up of a chocolate chip cookie broken in half, with melted chocolate drizzled on top—perfect inspiration for your next tasty stuffed cookie adventure.

Top Tips

Chill the dough: This helps prevent spreading and makes the cookies thicker.
Don’t overfill: You don’t want the filling to leak out.
Seal the edges: Make sure no candy is exposed before baking.
Let them cool: The Mars center will be hot and molten straight from the oven, so let the tasty stuffed cookies cool before serving.

A close-up of a tasty stuffed cookie, made with fun size chocolate bars and drizzled with chocolate, resting on a light striped cloth.

Mars Bar Stuffed Cookies FAQs

What’s a Mars Bar?

Mars bars were created by Forrest Mars at Mars, Incorporated back in 1932 in Slough, England. The British version of this bar was caramel and nougat coated in chocolate. The American version was toasted almonds and nougat in chocolate. Later, they began adding caramel too. In 2002 the American version was discontinued. It was later re-launched as Snickers Almond.

Can I make the dough ahead of time?

Yes, refrigerate for up to 48 hours or freeze for later use.

Do these cookies spread a lot?

Not much, especially if the dough is chilled properly.

Chocolate-drizzled cookies, made with fun size chocolate bars, are stacked on a striped cloth with chocolate chunks nearby.

Tasty Mars Bar Stuffed Cookies Recipe

5 from 4 votes

Mars Bar Stuffed Cookies

These cookies hide a sweet surprise in every bite. With a soft, golden dough and gooey Mars center, they’re a fun upgrade to a classic cookie. Perfect for parties or sweet cravings.
Prep Time: 8 minutes
Cook Time: 12 minutes
Refrigerate: 1 hour
Total Time: 1 hour 20 minutes
Servings: 24

Ingredients 

Instructions 

  • In a medium bowl add flour, baking soda, baking powder and salt. Set aside.  
  • Grease or place parchment paper on 2 baking sheets.
  • With an electric mixer, beat butter and sugar until light and fluffy. Add eggs and beat well.   
  • Gradually add dry ingredients to the creamed mixture. Refrigerate for 1 to 2 hours.  
  • Preheat oven to 350°F.
  • Scoop batter by tablespoons onto baking sheet. Add a Mars bite and place another scoop of batter on top. Close up into a ball.
  • Bake for 12 to 14 minutes.  
  • Allow to cool 5 minutes before moving to cooling rack.  

Notes

Chill the dough: This helps prevent spreading and makes the cookies thicker.
Don’t overfill: You don’t want the filling to leak out.
Seal the edges: Make sure no candy is exposed before baking.
Let them cool: The Mars center will be hot and molten straight from the oven.

Nutrition

Calories: 170kcal | Carbohydrates: 32g | Protein: 2g | Fat: 3g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 14mg | Sodium: 123mg | Potassium: 33mg | Fiber: 1g | Sugar: 23g | Vitamin A: 32IU | Calcium: 28mg | Iron: 1mg
Like this recipe? Rate and comment below!

Mars Bar stuffed cookies are the kind of treat that disappears quickly from the cookie jar. The combination of a soft, chewy dough and a gooey, candy-filled center makes them irresistible. Whether you’re baking a batch for guests, kids or just yourself, this stuffed cookie recipe is easy to make and even easier to devour. Keep this recipe in your back pocket for any time you want to impress without fuss.

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Bella Bucchiotti

Bella Bucchiotti is a Canadian-based syndicated food, travel, and lifestyle writer, photographer, and creator at xoxoBella. She founded xoxoBella in 2015, where she shares her love for food, dogs, sustainability, fitness, crafts, outdoor adventures, travel, and philanthropy to encourage others to run the extra mile, try new recipes, visit unfamiliar places, and stand for a cause. Bella creates stress-free and family-friendly recipes for weeknight dinners and festive feasts.

 

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5 from 4 votes (3 ratings without comment)

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