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    BeeyondCereal » Recipes » Microwave Recipes

    Rice Krispie Treat in a Mug

    Modified: Oct 17, 2023 Published: Apr 26, 2023 by Nicole Durham This post may contain affiliate links. Leave a Comment

    Jump to Recipe Pin Recipe
    5 from 1 vote

    Why make a bunch of treats when making one is just as easy? Within a few short minutes, you can have your own personal rice krispie treat in a mug. Gooey, sweet, and the perfect treat or late night snack.

    Recipe: $0.21 | Per Serving: $0.21 | Servings: 1

    a fork holding a bite of rice krispie treat above a mug with more inside.

    Whether satisfying a sugar craving or using up leftover cereal, this mug rice krispie treat is ideal.

    Often, we're left with remnants of cereal in the bag, insufficient for a bowl but suitable for Fruity Pebbles Banana Bread or a Fruity Pebbles Milkshake. Yet, what about a quick, tasty fix?

    In mere seconds, this recipe is ready, simple enough to repeat endlessly. Once you've indulged in microwave rice krispie treats in a mug, snacking may never be the same. With ooey-gooey marshmallows, buttery cereal, and the option to eat it with a fork, the experience is extraordinary.

    For more rice krispie recipes, explore our Oreo Rice Krispie Treats and Rice Krispie Treats with Marshmallow Fluff.

    Jump to:
    • 🍯 Why This Recipe Works
    • 🥘 Ingredients
    • 🧾 Substitutions
    • 🔪 Instructions for Rice Krispie Treat in a Mug
    • 🍴 Recipe Tips
    • 👩🏻‍🍳 Storage
    • 💭 Recipe FAQs
    • ❤️ More Delicious Treat Recipes
    • 📖 Recipe
    • 💬 Comments

    🍯 Why This Recipe Works

    1. It's fast. Within seconds flat, your rice krispie is finished cooking. How long you wait to eat it is up to you, but this recipe is incredibly quick, especially when compared to making these treats in larger quantities using the traditional method.
    2. Minimal ingredients are needed. You'll need barely a handful of cereal or marshmallows for this recipe. This is significantly less than if you were to make a huge batch, and it's perfect for using up smaller amounts that may be in the pantry. Great for a Clean Out the Pantry Challenge!
    3. Minimal dirty dishes are created. All you need is a fork and a mug for this recipe. No baking dishes, large pots, wooden spoons, etc. This means that you can prepare your recipe, enjoy it, and enjoy not having to spend more time cleaning up than you do cooking.

    🥘 Ingredients

    labeled ingredients needed to make rice krispie treats in a mug.

    Ingredient Notes:

    Butter- You will need a little bit of butter for this recipe. The butter will help to melt the marshmallows, keep the treats soft and add flavor to them as well. Not only that, but it helps to grease the mug, so the cleanup is much easier. If desired, you could swap the butter for coconut oil to make Dairy Free Rice Krispie Treats.

    Cereal- Use some rice crispy cereal for these treats. You can switch out the cereal for different varieties if desired.

    Marshmallows- Using mini marshmallows is recommended as they will melt more easily and uniformly.

    For specific ingredients and measurements, please see the recipe card below.

    🧾 Substitutions

    Cereal. Feel free to use any brand of cereal or cereal variety. Using fruity pebbles instead of rice krispies can give a nice fruity flavor, whereas cinnamon toast crunch can add a nice sweet and spice flavor.

    If you're still looking for more ways to use up leftover dry cereal, check out our Cinnamon Toast Crunch Shake, Lucky Charms Cookies, or Captain Crunch Cookies.

    🔪 Instructions for Rice Krispie Treat in a Mug

    Step 1: Measure out the ingredients and keep them close by as this recipe will progress quickly.

    a mug with butter inside.

    Step 2: Add your butter to a 16 ounce microwave safe mug.

    a mug with melted butter inside.

    Step 3: Heat in the microwave for 10 seconds or until fully melted.

    a mug with mini marshmallows and melted butter inside.

    Step 4: Add in the mini marshmallows. You do not need to stir.

    a mug with melted marshmallows and butter inside.

    Step 5: Heat for 30 seconds.

    a mug with dry rice krispie cereal inside.

    Step 6: Add in the cereal.

    a mug with rice krispie treat mixture inside.

    Step 7: Stir together to combine.

    Step 8: You can choose to eat the treats right now, or you can wait. Waiting 1-2 minutes will soften the cereal and make the treat taste more like the traditional rice krispie treats you know and love.

    Waiting 5 minutes before eating will allow the krispie treat to cool down enough that you can form the mixture into an actual rice krispie square if that's what you'd prefer.

    Enjoy!

    a rice krispie square in front of a coffee mug with a fork inside.

    🍴 Recipe Tips

    1. Try not to overcook or over stir your treats. Microwaves all heat a little differently, and some may run hotter than others. (We mention this tip in our Cake Mix Mug Cakes recipe too).
    2. Practice makes perfect. For this, you'll want to test this recipe a time or two before getting the timing perfect. You want the butter just melted and the marshmallows to be just softened and starting to dissolve.
    3. Don't overwork the marshmallows. Marshmallows will puff up when microwaved, and if overcooked, when you stir them around, they'll harden as they cool.

    👩🏻‍🍳 Storage

    This mug treat is meant to be eaten right away, but if desired, you can make it and save it for later.

    Room Temp- You can store it in an airtight container or zipper-topped baggie for up to a week or two at room temperature. I recommend eating them sooner rather than later as they'll taste best when fresh.

    Freezer- To freeze your treats, place them in an airtight container or individually wrap serving-sized squares in plastic wrap before placing them in a freezer-safe container. Then freeze for up to 3 months. Thaw at room temperature before eating.

    💭 Recipe FAQs

    Can I use margarine for my rice krispie treat?

    Yes, absolutely! Simply use any margarine instead of butter and follow the recipe as requested. The end result should be a soft texture that tastes fabulous. Another great alternative is to use coconut oil instead of butter, but it will leave a coconut flavor behind.

    Why is my Rice Krispie treat hard?

    If you overcook, over-stir, or overheat your marshmallows and butter, then you can easily end up with hard cereal treats.

    Can I use salted butter for rice krispie treats?

    Yes, you could use salted butter or unsalted depending on your preference. While unsalted butter may keep the flavors true, a little salt from salted butter could really make the flavors pop and add a nice contrast.

    Will stale marshmallows work for rice crispy treats?

    Unfortunately, they don't melt properly, turning into a single blob instead of being soft and gooey. Follow this tip: Reserve older marshmallows for hot cocoa and s'mores, and opt for a fresh bag for perfect rice krispie treats.

    a fork holding gooey marshmallow rice krispie cereal above a mug.

    ❤️ More Delicious Treat Recipes

    • one and a half Cone Brownie next to a fresh strawberry.
      Ice Cream Cone Brownies
    • two squares of golden graham cereal bars on a plate.
      Golden Graham Smores Bars
    • sliced squares of fruity pebbles treats with scattered cereal and mini marshmallows around them.
      Fruity Pebbles Treats
    • sliced scotcheroo squares on and off of a cake stand with scattered chocolate chips and butterscotchchips
      Microwave Scotcheroos

    If you tried this rice krispie treat in a mug, please leave a ⭐️ star rating and share your feedback in the 📝 comments section below. I would truly appreciate it!

    📖 Recipe

    inside a mug with a rice krispie treat mixture inside.
    Print Recipe
    5 from 1 vote

    Rice Krispie Treat in a Mug

    Why make a bunch of treats when making one is just as easy? Within a few short minutes, you can have your own personal rice krispie treat in a mug. Gooey, sweet, and the perfect treat or late night snack.
    Prep Time 2 minutes mins
    Cook Time 1 minute min
    Cool 5 minutes mins
    Total Time 8 minutes mins
    Servings: 1 serving
    Calories: 165kcal
    Cost Recipe $0.21
    Prevent your screen from going dark

    Equipment

    • Measuring Cups
    • Measuring Spoons
    • Microwave safe mugs
    • Fork
    • Microwave

    Ingredients

    • ½ Tablespoon butter ($0.06)
    • ½ cup mini marshmallows ($0.11)
    • ½ cup crispy rice cereal ($0.04)
    US Customary - Metric

    Instructions

    • Measure out the ingredients and keep them close by as this recipe will progress quickly.
    • Add your butter to a 16 ounce microwave safe mug.
    • Heat in the microwave for 10 seconds or until fully melted.
    • Add in the mini marshmallows. You do not need to stir.
    • Heat for 30 seconds.
    • Add in the cereal.
    • Stir together to combine.
    • You can choose to eat the treats right now, or you can wait. Waiting 1-2 minutes will soften the cereal and make the treat taste more like the traditional rice krispie treats you know and love.
    • Waiting 5 minutes before eating will allow the krispie treat to cool down enough that you can form the mixture into an actual rice krispie square if that's what you'd prefer.

    Notes

    Recipe Tips:
    When you're microwaving, be careful not to cook or stir too much. Try timing it a few times until it's just right. You want the butter to melt and the marshmallows to get soft. If you cook too long, your treats might get hard when they cool down.
    Storage:
    • Room Temperature: Store in an airtight container or sealed bag for up to two weeks.
    • Freezer: Freeze individually wrapped servings for up to three months. Thaw at room temperature before consuming.

    Nutritional Information

    Serving: 1serving | Calories: 165kcal | Carbohydrates: 29g | Protein: 1g | Fat: 6g | Saturated Fat: 4g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 2g | Trans Fat: 0.2g | Cholesterol: 15mg | Sodium: 65mg | Potassium: 14mg | Fiber: 0.2g | Sugar: 14g | Vitamin A: 175IU | Calcium: 3mg | Iron: 0.3mg
    Author Nicole Durham
    Course Snack
    Cuisine American
    Diet Vegetarian
    Tried this recipe?Mention @BeeyondCereal on Instagram and hashtag it #BeeyondCereal
    Nutrition provided is an estimate. It will vary based on specific ingredients used. To view how this recipe was calculated you can visit my Pricing Disclosure Page for more information.

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    The proud owner and recipe developer behind BeeyondCereal. Here, I'm passionate about showing people how to navigate the kitchen with frugality in mind, whipping up family-friendly recipes that not only save money but also bring joy to every meal.

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