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    Home » Recipes » All Recipes

    Microwave Mug Rice Krispie Treat

    Published: Dec 30, 2020 · Modified: May 31, 2025 by Kathleen Hansen · This post may contain affiliate links · 2 Comments

    Jump to Recipe·Print Recipe

    Making a gooey Rice Krispie treat in the microwave is so simple. Perfect single-serving sweet treat. Just 3 ingredients and 1 minute in the microwave. A Microwave Mug Rice Krispie Treat is a favorite by both kids and adults - perfect for the whole family!

    Microwave Rice Krispie treat made in a mug

    Ingredients for the Microwave Rice Krispie Treat:

    • Rice Krispie Cereal
    • Mini Marshmallows
    • Butter
    • Salt - you can skip if you use salted butter
    Rice Krispie cereal, mini marshmallows, and butter in small bowls

    How to make this single serving Rice Krispie treat:

    Check out this Quick Video

    Easy Step by Step:

    1. Melt the Butter and Marshmallows.
    2. Stir in Cereal and Salt.
    3. Enjoy!

    Tips and FAQ's

    Add Sprinkles to make it Fun and Festive!

    While sprinkles aren't needed, they're a fun add to make this Rice Krispie treat extra special.

    Especially to make this mug treat kid-friendly!

    Gooey Rice Krispie treat made in a mug in the microwave

    Can I make more than one?

    This recipe is written for one mug, but you can easily double it to make two!

    It’s best to microwave them separately, though. Microwaving two mugs at once will impact the cook time.

    What size of mug should I use?

    Any standard size (8 ounces or larger) coffee mug works! The marshmallows will puff up as it melts in the microwave. Once you add the Rice Krispies, they will deflate.

    The most important piece is to use a mug that is microwave safe!

    Microwave Rice Krispie treat in a mug with mini marshmallows

    Do I need to grease my mug?

    Because you eat the the treat right out of the mug, you do not need to grease.

    I do not grease and instead just soak the mug in some warm soapy water for a few minutes before cleaning to remove any cooked on bits.

    Check out these other microwave mug recipes:

    • Apple Crisp
    • Coffee Cake
    • Molten Chocolate Cake
    • Sugar Cookie
    • Chocolate Chip Cookie
    • Hot Cocoa Mug Cake

    Like this recipe? Sign up for my e-mail list so you get new recipe notifications straight to your inbox as well as occasional ‘bonus’ content not found on the blog! Click Here!

    Print

    Recipe

    Microwave Mug Rice Krispie Treat

    Mug Rice Krispie Treat made in a mug
    Print Recipe

    5 Stars 4 Stars 3 Stars 2 Stars 1 Star

    5 from 1 review

    Making a gooey Rice Krispie treat in the microwave is so simple. Perfect single-serving sweet treat. Just 3 ingredients and 1 minute in the microwave. A Microwave Mug Rice Krispie Treat is a  favorite by both kids and adults - perfect for the whole family!

    • Author: Kathleen
    • Prep Time: 2 minutes
    • Cook Time: 1 minute
    • Total Time: 3 minutes
    • Yield: 1 serving
    • Category: Dessert
    • Method: Microwave
    • Cuisine: American

    Ingredients

    • ½ tablespoon Unsalted Butter
    • ¾ cup Rice Krispies Cereal
    • ¾ cup Mini Marshmallows
    • Pinch of Salt, omit if using Salted Butter

    Instructions

    1. Melt Marshmallows and Butter. Add butter and marshmallows in a microwave-safe mug. Microwave for 30 seconds or until melted. Be careful, the marshmallows will puff up - don't let them overflow in the mug. It helps to microwave in intervals if this happens.
    2. Stir in Cereal. Add Rice Krispies and a small pinch of salt to the melted marshmallows and butter. Stir to combine - it will be sticky and gooey.
    3. Enjoy! 

    Notes

    Sprinkles - While sprinkles aren't needed, they're a fun add to make this Rice Krispie treat extra special.

    Nutrition

    • Serving Size: 1 mug
    • Calories: 289
    • Sugar: 30.5 g
    • Sodium: 2526.4 mg
    • Fat: 7.1 g
    • Carbohydrates: 56.2 g
    • Fiber: 0.2 g
    • Protein: 2 g
    • Cholesterol: 15.6 mg

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    Reader Interactions

    Comments

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    1. jill says

      December 30, 2020 at 6:40 pm

      I love this idea so much! I'll be making this as a treat for myself soon!

      Reply
      • Kathleen says

        December 30, 2020 at 7:12 pm

        Yay! Thank you!! 🙂

        Reply

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    Hi! I'm Kathleen and welcome! My favorite place to be has always been in the kitchen and I love creating recipes that are easy and approachable. Simple ingredients and easy-to-follow instructions!

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