If you need a quick little gift that looks cute and actually turns into dessert, this Reese’s Peanut Butter Cup Fudge Mix in a Mug gets the job done. You layer a simple candy mix into a mug, tuck in a spoon, add the tag, and the recipient gets a rich microwave fudge with peanut butter cup bits and gooey marshmallows in just a few minutes.
It also solves the usual mug-gift problem: nobody wants a dusty mix that tastes like cardboard and regret. This one turns into a soft, candy-style fudge with a strong chocolate-peanut butter payoff and very little fuss.
Ingredients for Reese’s Peanut Butter Cup Fudge Mix in a Mug
You only need a handful of pantry staples for the mix itself, plus margarine when it’s time to cook it.
- 1/8 cup milk chocolate chips
- 1/8 cup sugar
- 6 Reese’s miniature peanut butter cups, chopped
- 1/2 cup mini marshmallows, packed separately
- 1 1/2 tablespoons margarine, added when cooking
If you already love candy-in-a-cup style treats, you might also like Peanut Butter Fudge Mix in a Mug or Reese’s Peanut Butter Cup Mix in a Mug.
How to Assemble the Mug Gift
This recipe is more about smart packaging than complicated prep. Keep the marshmallows separate so they don’t get sticky or squashed into the chocolate mix before gifting.
- Measure the milk chocolate chips, sugar, and chopped Reese’s miniature peanut butter cups into a small zip-top bag.
- Seal the bag and shake gently to combine.
- Measure the mini marshmallows into a separate small zip-top bag.
- Line a mug with tissue paper.
- Place both baggies inside the mug and add a pretty tag and tiny wooden spoon.
Gift Tag Directions
Attach these directions to the mug so the recipient knows exactly what to do:
Combine fudge mix with 1 1/2 tablespoons margarine and cook in the microwave for 3 minutes. Remove and quickly stir in the marshmallows until well melted. Cool 5 to 7 minutes, then place in the refrigerator for 8 to 10 minutes to set.
That short chill time is what takes it from molten candy goo to scoopable, soft-set fudge. Useful distinction there.
Helpful Tips
- Chop the peanut butter cups fairly small. Smaller pieces melt more evenly and distribute better through the fudge.
- Use a larger microwave-safe mug or bowl for cooking. Candy mixtures can bubble up fast, and cleaning boiled-over sugar off a microwave is nobody’s hobby.
- Stir the marshmallows in immediately. The residual heat helps them melt into the mixture before it starts to firm up.
- Don’t skip the chill. Even a quick 8 to 10 minutes in the refrigerator helps the fudge set enough to eat with a spoon.
Variation Ideas
This mix already leans hard into the chocolate-peanut butter lane, but you can still tweak the gift presentation or flavor a bit.
- Swap the tissue paper color and tag style for holidays, teacher gifts, or stocking stuffers.
- Use seasonal shaped peanut butter cup candies if that’s what you have, then chop them to roughly miniature size.
- Add a pinch of flaky salt on top after cooking if you want the sweetness balanced a little.
- Pair the mug with a packet of hot cocoa or a copy of Molten Peanut Butter Lava Fudge Mug Cake for a peanut-butter-lover gift set.
Storage and Shelf Life
For the dry gift mix, store the sealed bags in a cool, dry place inside the mug or in an airtight container. Since mini marshmallows lose quality faster after opening, a conservative estimate is to use the assembled gift within 1 month for best texture and flavor.
Once prepared, treat the fudge like a perishable homemade leftover and refrigerate it promptly. A sensible refrigerator estimate is up to 3 to 4 days in a covered container, which lines up with general leftover guidance from the USDA Food Safety and Inspection Service. Freezing is possible for up to 3 months, though the texture may turn a little crumbly after thawing.
If you’re gifting it ahead, keep the mug away from heat and humidity. Chocolate chips and chopped candy will tolerate room temperature just fine, but moisture will turn the whole thing clumpy in a hurry.
Serving Suggestions
Serve the finished fudge warm-soft straight from the mug, or chill it a bit longer for a firmer spoon-fudge texture. It’s rich enough for 2 small servings, especially after dinner or alongside coffee.
If you’re making a few mug gifts at once, bundle them with ribbon and keep the tags clear and readable. Cute is nice, but readable wins.
💸 Budget101® Price Breakdown: Reese’s Peanut Butter Cup Mix in a Mug
Ingredient |
Walmart Item |
Pkg Price |
Amount Used |
Cost Used |
|---|---|---|---|---|
Any chocolate flavor cake mix |
$1.12 |
1/3 C. ≈ 1 box ≈ 2.5 cups dry mix |
$0.15 |
|
Reese's Peanut Butter Cup Miniatures candies |
$3.98 |
4 ≈ average unwrapped mini |
$0.28 |
💸 |
Cost |
|---|---|
🧾 Total Batch Cost (makes 1 mug) |
$0.43 |
👨👩👧👦 Cost Per Serving |
$0.22 |
📅 Walmart prices last verified August 26, 2026. Prices may vary by location and are subject to change. Learn how to calculate the cost of a recipe on your own!
🛒 Walmart Grocery List
- Milk Chocolate Chips, 11.5 oz
- Granulated Sugar, 4 lb
- Reese’s Minis Peanut Butter Cups, 7.6 oz
- Mini Marshmallows, 10 oz
- Margarine Sticks, 16 oz
Not sure exactly what this batch costs you per serving? Here’s how to break down the real cost of any recipe so you know before you shop.
Frequently Asked Questions about Reese’s Peanut Butter Cup Fudge Mix in a Mug
You can, but cut them into smaller pieces first. Mini marshmallows melt faster and more evenly, so if you swap in regular ones, aim for about 1/2 cup snipped pieces so you do not end up stirring around one giant sticky blob.
Yes, regular butter should work here in the same 1 1/2 tablespoon amount. Use stick butter, not whipped or spreadable tub butter, so the fat and water balance stays closer to what the mix needs for a soft fudge texture.
Use a roomy microwave-safe mug or small bowl that holds at least 12 to 16 ounces. The mixture gets hot and can bubble as the chocolate melts, so a little headroom saves you from a microwave mess and some colorful language.
A little, yes, but not by much without changing how it sets. The easiest fix is to use dark chocolate chips in place of the milk chocolate chips, which cuts the sweetness a bit and gives the peanut butter cups more contrast.
Keeping them separate protects the texture. Marshmallows pick up moisture, compress easily, and can make the dry mix sticky if they sit against the sugar and chopped candy for too long.
You can, but it is smarter to make two separate mug gifts instead of doubling one cooking batch. Microwave candy can heat unevenly in larger amounts, which means one spot scorches while another still looks half asleep.
Once the marshmallows are stirred in, the mixture should look glossy and mostly smooth with no obvious dry sugar pockets. If you still see unmelted marshmallow chunks, keep stirring for 30 to 60 seconds before chilling so the texture sets more evenly.
Absolutely. For best quality, assemble them up to 1 month ahead and keep them in a cool, dry spot away from sunlight, the stove, or any steamy corner of the kitchen that likes to sabotage candy.
A tiny wooden spoon is the obvious choice, but a packet of hot cocoa, coffee sachets, or a bag of salted peanuts makes it feel more like a real gift bundle. If you want to stay on theme, pair it with another peanut butter treat instead of random holiday filler.
Yes, just chop them small and measure by rough volume so you end up with about the same candy amount as 6 miniatures. Smaller pieces spread through the fudge better, which means you get peanut butter cup flavor in more than just one lucky bite.
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🖨️ Print-Friendly Reese’s Peanut Butter Cup Fudge Mix in a Mug
Reese's Peanut Butter Cup Mix in a Mug
Ingredients
- ⅓ cup any chocolate flavor cake mix
- 4 Reese's Peanut Butter Cup Miniatures candies chopped into pieces
Equipment
Instructions
- Measure the cake mix and chopped peanut butter cup pieces into a small zip-top bag, seal, and shake to combine. To prepare the mug cake, empty the mix into a mug, add 2 teaspoons oil, 1 tablespoon water, and 1 egg white, then whisk well. Microwave on high for 2 minutes.
- Empty the prepared mix into a mug, add the oil, water, and egg white, and whisk until smooth. Microwave on high for 2 minutes and serve immediately while the candy pieces are still soft.
Recipe Size Alteration
💡 If you altered the ingredients above by doubling or tripling the recipe, you may also need to change the pan/dish size and adjust the cook time.
Notes
Prep time is an editorial estimate based on measuring, chopping, bagging, and assembling the mug gift.
For best quality, use the dry gift mix within 1 month if stored sealed in a cool, dry place.
After preparation, refrigerate leftovers promptly and use within 3 to 4 days.
