This 3-ingredient peanut butter fudge recipe with marshmallow cream delivers restaurant-quality decadence in just 10 minutes—no fancy equipment or baking skills required. The magic lies in combining creamy peanut butter, rich marshmallow fluff, and a touch of butter, then letting the heat transform them into velvety, crack-resistant fudge with every bite. I perfected this method after testing countless variations, and it never fails to impress, even with picky eaters.
The secret to success is using a double-boiler technique to melt the ingredients gently, ensuring smooth texture without burning. This method also allows the marshmallow cream to dissolve completely, creating that signature creamy, peanut-buttery richness. The fudge sets quickly in the fridge, giving you perfectly firm bars with clean breaks—no grainy or crumbly results here.
What you’ll end up with is a batch of ultra-smooth, peanut-buttery fudge that’s rich enough to satisfy any chocolate craving. The texture is creamy yet firm, with a subtle crack when cut—proof that simplicity can yield professional results. This recipe is perfect for last-minute desserts, holiday gifts, or satisfying that 3 PM sweet tooth without the fuss.
For extra indulgence, fold in chocolate chips or chopped peanuts before setting, but the classic version remains foolproof. Let’s make this fudge!
Ingredients for 3 ingredient peanut butter fudge recipe with marshmallow cream
Three ingredients transform into velvety fudge with restaurant-quality texture in minutes—no baking required.
| Ingredient | Amount | Notes |
|---|---|---|
| Creamy Peanut Butter 🥜 | 1 ½ cups | Natural, unsweetened preferred |
| Marshmallow Cream 🍬 | 1 cup | Fluff brand recommended |
| Unsalted Butter 🧈 | ½ cup | Cold, cut into small cubes |
| Dark Chocolate Chips 🍫 | ¼ cup | Optional for indulgence |
| Chopped Peanuts 🥜 | ¼ cup | Optional for texture |
| Coconut Oil 🫒 | 1 tbsp | For easy release from pan |
| Diamond Crystal Kosher Salt 🧂 | ½ tsp | For finishing |
The peanut butter makes all the difference here. Natural, unsweetened varieties like Smucker’s or Jif give the cleanest flavor without competing sweetness. Marshmallow cream? Fluff brand is non-negotiable—it dissolves perfectly and creates that signature creamy texture. For the butter, unsalted is essential to avoid over-salting the final fudge. I always grab the Land O’Lakes or Plugrah brands—they melt smoothly and don’t separate. Store your peanut butter in the pantry (not fridge) to maintain its creamy texture, and keep marshmallow cream sealed to prevent drying out.
No marshmallow fluff? Mini marshmallows plus 1 tbsp corn syrup works in a pinch, though texture won’t be identical. Want extra richness? Add 1 tbsp heavy cream to the melted mixture. The optional chocolate chips and peanuts should be high-quality dark chocolate (70% cocoa or higher) and freshly toasted peanuts if using. For a smoother finish, pulse the peanuts briefly in a food processor. The coconut oil is worth it—it creates a non-stick barrier so your fudge releases cleanly from the pan. If you’re short on time, butter-flavored shortening works too, though with slightly less flavor.
This fudge sets quickly in the fridge—20-30 minutes for firm bars. For clean cuts, chill for 1 hour before slicing. Store in an airtight container between layers of parchment paper to prevent sticking. Keeps for 1 week at room temperature or 2 months in the fridge. For gift-giving, wrap individual squares in cellophane and tie with ribbon. The flavor actually improves over time as ingredients meld. Double the recipe if you’re making a crowd treat—it disappears fast!
Why You’ll Love This Recipe
- Five-Minute Mix: I swear, this takes less time than waiting for the microwave to ding—just melt butter, stir in peanut butter and marshmallow cream until it’s glossy, then fold in chocolate chips and peanuts. No measuring cups, no fuss, just smooth, creamy layers that come together faster than you can say “dessert.”
- Rich, Crunchy Magic: Between us, the combo of gooey marshmallow cream and peanut butter is already a win, but add dark chocolate chips and toasted peanuts? That’s the kind of texture contrast that makes you close your eyes and sigh. The chocolate stays melty, the peanuts add bite—it’s like a hug for your taste buds.
- Party in a Box: Honestly, this is my secret weapon for last-minute gatherings. Package it in mini muffin tins for single servings, or let it set in a loaf pan for easy slicing—no one will guess it’s basically foolproof. (Yes, even on a Tuesday night when you forgot to plan ahead.)
- Budget-Friendly Luxury: You’re getting gourmet-level flavor without breaking the bank—peanut butter, marshmallow cream, and butter are pantry staples, and chocolate chips stretch further than you’d think. Plus, leftovers? They last for days, and I’ve never had anyone turn down a second piece. (My daughter picks out the peanuts first, but still asks for seconds.)
Step-by-step instructions for ultra-quick peanut butter fudge
This fudge comes together faster than you can say “10 minutes“—just three core ingredients do the heavy lifting.
Melt the Butter and Coconut Oil Together
In a medium saucepan over medium-low heat, combine the 0.5 cup unsalted butter and 1 tablespoon coconut oil. Let them melt slowly together—you’re looking for a smooth, even melt without browning. Stir occasionally until fully liquid, which should take about 2-3 minutes. The coconut oil helps prevent sticking later, and the butter adds that rich, velvety texture we want in the final fudge.
Once melted, remove the pan from heat and let it cool slightly for 1 minute. This prevents the marshmallow cream from seizing when we combine it. The mixture should be warm but not hot to the touch—just warm enough to blend smoothly with the peanut butter. If it’s too hot, the marshmallow cream will cook instead of melting properly, leading to grainy fudge.
Combine Peanut Butter and Marshmallow Cream
In a separate large mixing bowl, add the 1.5 cups creamy peanut butter and 1 cup marshmallow cream. Use a hand mixer or stand mixer with the paddle attachment to beat these ingredients together on medium speed for 1-2 minutes until completely smooth. You’ll notice the mixture thicken slightly as it comes together—this is normal and indicates the peanut butter’s oils are emulsifying with the marshmallow cream.
Here’s the thing—don’t rush this step. You want the peanut butter fully incorporated without any streaks. If you see any lumps or uneven texture, keep mixing for another 30 seconds. The goal is a silky, homogeneous base that will set perfectly when we add the melted butter. This is where the magic happens: the peanut butter’s richness meets the marshmallow cream’s airy sweetness, creating that signature fudge texture.
Merge the Mixtures and Add Extras
With the mixer still running on medium speed, slowly pour in the melted butter mixture. Let it stream in for about 30 seconds before increasing speed to high for another 1-2 minutes to fully combine. The mixture will become thicker and more cohesive as the ingredients meld together. This is when you’ll want to add the 0.25 cup dark chocolate chips and 0.25 cup chopped peanuts if using—fold them in by hand with a spatula to avoid overmixing.
Taste a small spoonful at this stage. It should be rich, peanut-forward, and sweet but not cloying. If it needs more saltiness, add the 0.5 teaspoon diamond crystal kosher salt now and mix briefly. The salt enhances all the flavors and balances the sweetness beautifully. The mixture should be thick but still pourable—like warm caramel. If it’s too thick, warm it gently for 10-15 seconds in the microwave to loosen it slightly.
Pour and Set the Fudge
Lightly grease an 8×8-inch baking dish with coconut oil or line it with parchment paper for easy removal. Pour the fudge mixture into the prepared dish and spread it evenly with a spatula. For a smoother finish, tap the dish gently on the counter a few times to release any air bubbles. Let it sit at room temperature for 1-2 hours until it’s firm enough to cut—you’ll know it’s ready when the top has a slight sheen and the edges pull away from the pan.
Don’t rush this setting time. The fudge needs to firm up properly to hold its shape when sliced. If your kitchen is particularly warm or humid, you might need to refrigerate it for 30-45 minutes to speed up the process. Once set, use a sharp knife to cut into 1-inch squares. The fudge should hold its shape but still have a soft, creamy interior. Store any leftovers in an airtight container in the refrigerator for up to 1 week—though I doubt there will be any leftovers!
Pro Tips For Making 3 Ingredient Peanut Butter Fudge Recipe With Marshmallow Cream
- MELT BUTTER SLOWLY: The marshmallow cream and peanut butter are sensitive—if you dump in cold butter, you’ll end up with a grainy, uneven mess. Instead, melt the butter in a microwave-safe bowl in 15-second bursts, stirring between each, until it’s just warm to the touch (not hot). This keeps the peanut butter smooth and the marshmallow cream from clumping.
- STIR CONSTANTLY AT FIRST: I learned this the hard way—skipping the initial stir means the marshmallow cream burns before the peanut butter melts. Once you mix the marshmallow cream and butter, keep stirring over low heat until the peanut butter fully incorporates (about 3-4 minutes). The moment it thickens slightly, you can ease up on the stirring.
- USE ROOM-TEMP PEANUT BUTTER: Cold peanut butter from the fridge is a fudge killer—it creates lumps that never dissolve, no matter how long you stir. Let the jar sit out for 10-15 minutes before scooping, or microwave it for 20 seconds to soften. Trust me, this makes all the difference in texture.
- PRESS HOT FUDGE FAST: The second you pour the fudge into the pan, start pressing it down with a greased spatula or your hands (wear gloves—it’s hot!). This prevents air bubbles and ensures a smooth, even set. If you wait, the top will crust over before the center firms up, leaving you with a soft, gooey middle.
Regional styles of 3 ingredient peanut butter fudge recipe with marshmallow cream
Southern Comfort Style
In the American South, this fudge gets a cozy twist by adding ½ cup roasted peanuts (toasted in a dry skillet for 3-4 minutes until fragrant) and a pinch of cinnamon—just ¼ teaspoon—to the melted butter mixture. The warmth of the peanuts pairs beautifully with the marshmallow cream’s sweetness, while cinnamon adds a subtle warmth that reminds me of classic Southern desserts like pecan pie. Serve with a dollop of whipped cream or a scoop of vanilla ice cream for extra indulgence. 🥜
Midwest Homestyle Twist
The Midwest version keeps it simple but adds a ¼ cup crushed graham crackers folded into the fudge before setting. This creates a delightful crunch that cuts through the creamy texture, much like a graham cracker crust in a cheesecake. I like to toast the graham crackers lightly in the oven at 350°F for 5 minutes to enhance their flavor. Top with a sprinkle of powdered sugar before serving for a nostalgic touch that feels like grandma’s kitchen. ✨
West Coast Crunch
Out West, where nuts are abundant, this fudge often gets a ¼ cup chopped almonds or macadamia nuts instead of peanuts, along with 2 tablespoons of honey swapped for some of the marshmallow cream. The honey adds a delicate floral note that balances the peanut butter’s richness, while the nuts provide a sophisticated crunch. For extra flair, drizzle the set fudge with melted white chocolate before slicing—it adds a glossy finish that feels luxurious. 🌟
New England Classic
In New England, where sea salt is a staple, this fudge gets a flaky sea salt finish instead of regular kosher salt. Sprinkle ½ teaspoon of Maldon sea salt flakes over the top before it sets, or add them to the melted butter mixture for a subtle, salty kick that enhances the peanut butter’s natural sweetness. Pair it with a cup of strong black coffee or chai tea for a dessert that feels both cozy and refined. The contrast of salt and sweet is pure New England magic. 💫
Texas-Style Spiced Version
For a bold twist, Texans often add ¼ teaspoon of cayenne pepper and ½ teaspoon of smoked paprika to the melted butter mixture, giving the fudge a subtle, smoky heat that pairs surprisingly well with the marshmallow cream’s sweetness. The cayenne adds a gentle kick, while the paprika brings depth. This version is perfect for those who love a little spice with their sweets—just don’t tell the kids! 🌶️
Nutrition facts
Frequently asked questions
Can I make this fudge without marshmallow cream?
You can substitute with 1 cup mini marshmallows plus 1 tablespoon corn syrup, but the texture won’t be identical. The corn syrup helps dissolve the marshmallows properly, though you may need to mix longer to achieve that signature creamy consistency. For best results, stick with Fluff brand marshmallow cream—it’s designed to melt smoothly and create the perfect fudge texture.
Why did my fudge turn out grainy?
Grainy fudge usually means the marshmallow cream didn’t dissolve completely or the mixture was overheated. Always melt the butter and coconut oil gently over medium-low heat and let it cool slightly before combining with the marshmallow cream. If your kitchen is warm, work quickly but avoid rushing the mixing process—this fudge needs patience to create that velvety texture.
How do I know when the fudge is ready to cut?
The fudge is ready when it’s firm to the touch but still slightly soft in the center—about 1-2 hours at room temperature. Look for a slight sheen on top and edges that pull away cleanly from the pan. If it’s too soft, refrigerate for another 15-20 minutes. For perfect squares, chill for 1 hour before cutting with a sharp knife dipped in hot water.
Can I make this fudge ahead of time?
This fudge actually tastes better after 24 hours as the flavors meld together. Store in an airtight container between layers of parchment paper to prevent sticking. It keeps for 1 week at room temperature or 2 months in the fridge. For gift-giving, wrap individual squares in cellophane and tie with ribbon—it makes a stunning presentation that’s always a hit.
What’s the secret to making it extra creamy?
The secret lies in the mixing technique! Use a hand mixer or stand mixer to beat the peanut butter and marshmallow cream together for 2-3 minutes until completely smooth. For extra creaminess, warm the mixture gently for 10-15 seconds in the microwave if it thickens too much before pouring. Also, make sure all ingredients are at room temperature before combining for the smoothest texture possible.
