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A spoonful of Rice Krispie treat in a white mug being pulled out to show the melty marshmallow

2-Minute Rice Krispie Treat in a Mug

5 from 5 votes
Have a craving for Rice Krispie Treats, but don't want to make a whole pan of them? This Rice Krispie Treat in a mug is single serving and needs only 3 ingredients, 2 minutes and a microwave!
Prep Time 1 minute
Cook Time 1 minute
Total Time 2 minutes
Servings 1 serving


  • ½ Tablespoon unsalted butter
  • 6 large marshmallows, or ¾ cup mini marshmallows
  • ½ cup to ¾ cup Rice Krispies cereal, dry


  • In a mug, add butter and microwave for 15-20 seconds or until just melted. Tip the mug slightly to the side and roll the melted butter around to coat the edges a bit.
  • Add marshmallows and microwave again for 30 seconds. Carefully remove from microwave and stir to combine. Immediately add Rice Krispies cereal and stir to combine. Start with ½ cup, then add up to another ¼ cup more if you'd like it thicker.
  • Serve and enjoy!



Cereal to marshmallow ratio: Start with ½ cup of Rice Krispies cereal at first, then add more if you want it to be thicker. I prefer my ratio of cereal to marshmallow to be more marshmallow-heavy, and it's also easier to eat with a spoon.
Mug size: You want your mug to be at least 8 ounces.
Microwave wattage: My microwave is 1500 watts, so you may need to adjust your time to be less or more depending on the wattage of your microwave.


Calories: 237kcal | Carbohydrates: 46g | Protein: 2g | Fat: 6g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 1g | Cholesterol: 15mg | Sodium: 108mg | Potassium: 21mg | Fiber: 1g | Sugar: 26g | Vitamin A: 1106IU | Vitamin C: 9mg | Calcium: 4mg | Iron: 4mg
Course Dessert
Cuisine American
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