Nutter Butter Cake in a Mug

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Nutter Butter cake in a mug tastes just like a fluffy version of the popular cookie. Make it in the microwave with just 4 simple ingredients!

Mug cakes are perfect for when you want a single serving of something sweet. I’ve been compiling all of the best flavors and recipes, like chocolate chip, Oreo, and funfetti.

This particular Nutter Butter dessert is tender and moist without being too rich. It’s got just the right amount of texture and flavor to satisfy any craving!

For another easy treat, try these delicious no-bake bars that combine chocolate and peanut butter with a crunchy graham cracker crust.

titled image for Nutter Butter Mug Cake


How To Make Nutter Butter Cake

Whip up this recipe in a few easy steps and you’ll be back on the couch before the commercial break ends!

  1. Crush the cookies. Run them through a food processor until they make a fine crumble.
  2. Mix the ingredients together. Add everything to your mug and stir until well combined.
  3. Microwave and garnish. Cook for about 1 minute, then let it cool for a few minutes before serving.
Nutter Butter Cake in a Mug ingredients

Helpful Tips and Tricks

  • Don’t have a food processor? Seal the cookies in a ziploc bag and use a rolling pin or your fingers to crush them instead.
  • Adjust cooking time as needed. Since every microwave is different, check to be sure the cake is fully done in the center. If not, heat in additional 10-second bursts until it is.
  • Enjoy this every night! Cut down on the prep work by crushing an entire package of cookies at once. Store them in a sealed container in the pantry, then measure out 1.6 ounces of crumbs (about 3 tablespoons) when you’re ready to make one.
Dry mug cake ingredients in white mug

Topping Suggestions

While this Nutter Butter cake is certainly delicious on its own, a simple dusting of powdered sugar or a swirl of whipped cream will put it over the top!

If you want to throw some chocolate in the mix, try adding chopped Reese’s cups, chocolate chips, or a drizzle of homemade fudge sauce.

Adding wet ingredients to the dry ingredients

FAQ – Common Recipe Questions

Can I cook more than one Nutter Butter dessert at once?

Sure! Prepare as many mugs as you need, but I would suggest only microwaving two at a time for best results. Keep in mind that the overall cooking time will probably be longer as well.

How do I tell when mug cakes are done?

When you press lightly on the top, the texture should be tender but firm. If it makes a deep dent, it needs more time.

Spoonful of Nutter Butter Cake in a Mug

Can I use plant based milk instead?

While I haven’t tried it myself, I don’t see why not. Almond milk will complement the flavor of the cookies, and soy or oat milk are always great substitutes for baking because of their texture and neutral flavor.


With love from our simple kitchen to yours. 

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Nutter Butter Cake in a Mug with Reese\'s on topping

Peanut Butter Cake in a Mug

Donna Elick
Peanut Butter Cake in a Mug tastes just like a fluffy version of a Nutter Butter cookie. Make it in the microwave with 4 simple ingredients!
5 stars from 1 review
Tried this recipe?Please comment and review!
Prep Time 5 minutes
Cook Time 7 minutes
Total Time 12 minutes
Course Dessert
Cuisine American
Method Food Processor, Microwave
Servings 1


  • 3 Nutter Butter cookies
  • 3 tablespoons milk
  • 1 teaspoon granulated sugar
  • 1/4 teaspoon baking powder
  • powdered sugar, for topping
  • 1 Reese’s cup, chopped


  • In a food processor, crush nutter butter cookies until fine crumbs form.
  • Add the crumbs, sugar, and baking powder to a 6-8oz. microwave safe mug, and stir.
  • Add the milk and mix to combine.
  • Microwave for 1 minute, adding 10 seconds more if needed.
  • Remove from the microwave and let cool for 2-3 minutes before serving.
  • Dust with powdered sugar and top with a chopped Reeses’s cup.

Donna’s Notes

Microwave times may vary based on microwave strengths, so starting at 1 minute and adding 10 additional seconds at a time will help fully cook the mug cake.
3 cookies equals 1.6 ounces of crumbs.


Serving: 1 | Calories: 325cal | Carbohydrates: 44g | Protein: 3g | Fat: 14g | Saturated Fat: 5g | Cholesterol: 6mg | Sodium: 334mg | Sugar: 26g | Fiber: 1g | Calcium: 127mg | Iron: 1mg

All nutritional information is based on third party calculations and is only an estimate. Each recipe’s nutritional value will vary depending on the ingredients used, measuring methods, and portion sizes.

Tried this recipe?Let us know how it was!
titled image for Nutter Butter Cake in a Mug

Originally published April 2021

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