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    Home » Recipes » cake

    3 Ingredient Peanut Butter Mug Cake

    Published: Jan 27, 2022 by Radwa ·

    Jump to Recipe

    This 3 ingredient peanut butter mug cake is an easy, quick and no-fuss treat. It is flourless, fudgy, made in the microwave in just 1 minute, and so good!

    I love single-serving treats, not only because they are simple but also because there is no waste and no leftover slices.

    peanut butter mug cake made with 3 ingredients in a microwave safe cup.

    Don’t miss my popular mug cake recipes, Oreo Mug Cake, Biscoff Mug Cake, Red Velvet Mug Cake (No Egg) and Hot Cocoa Mug Cake.

    3 Ingredient Peanut Butter Mug Cake

    I’m so proud of how this Peanut Butter Mug Cake turned out! It has an excellent combination of the best taste and texture a mug cake can ever give you. Its sweetness is just enough to be labelled as delicate and simple, yet it would definitely make you come back for more.

    While the taste is utter perfection, the texture is also promising, being moist, soft, fluffy, and rich. Once you learn the exact way of making this dessert at home, there will be no room for failing this recipe.

    You may have your 3 Ingredient Mug Cake any time of the day at any given meal. It may serve as your breakfast for an early sweetness boost or as your lunch after a busy morning at school or work.

    a spoonful of Peanut Butter Cake.

    Why We Love This Recipe

    Mug cakes are an incredibly delicious treat to make and serve, but with the flavor of peanut butter? It surely is the perfect mug cake.

    Here are some of the best things about this recipe that will make you gather all of its ingredients and copy the step-by-step instructions:

    • It is made with only 3 ingredients and all of which can be found in your pantry or be bought from the nearest convenience store.
    • The step-by-step process of making this treat is quick and easy to follow. In under 5 minutes, you will already have your mug cake fresh from the microwave.
    • This dish is suitable for any age. Adults and children alike will have a blast devouring mug after mug of this dish.
    • As this recipe does not contain flour, it is completely gluten-free!
    • The recipe is dairy-free as well.
    a spoonful of the flourless Peanut Butter Cake

    What's in This 3 Ingredients Mug Cake

    Peanut Butter. Peanut butter is the base ingredient for this recipe as it is also the main flavor of the dish. It will give your mug cake a salty, nutty, and sweet flavor. I prefer to use creamy peanut butter, but you may use crunchy.

    Granulated Sugar. To add more sweetness to the recipe, you should add granulated sugar.

    Egg. Adding egg to the mug cake batter will help it rise a little bit and form a moist texture.

    Chocolate Chips (optional). If you want a chocolatey taste mixed with your peanut butter, you may add some of these chocolate chips for toppings.

    “See the recipe card for full information on ingredients and quantities.”

    Variations & Substitutions

    • An easier substitute for granulated sugar is brown sugar.
    • There are many options for toppings you may choose from other than chocolate chips. For soft and creamy toppings, you may top your mug cake with whip cream. If you want a pillowy texture, you may consider using marshmallows instead. However, if you prefer your homemade mug cake as it is, you don't have to add any toppings at all.

    How To Make This 3 Ingredient Peanut Butter Mug Cake?

    whisk together all the ingredients then pour into a microwave safe mug.

    One: In a small mixing bowl, whisk together all the ingredients until combined.

    Two: Transfer the batter into a microwave-safe mug or ramekin. Scatter chocolate chips on top (if using).

    Three: Microwave for 1 minute. Remove from the microwave and allow it to sit for a minute before eating.

     a spoonful of flourless mug cake made with 3 ingredients.

    Top Tips!

    • The mug that you use must be sturdy and heat-resistant (you don't want your cup to crack) but also not become excessively hot to hold the mug cake while it is being baked in the microwave.
    • To remove the mug from the microwave, place an oven glove or a tea towel around the handle. Allow the mug cake to cool for a few minutes before cutting into it.
    • Do not overcook! It takes no longer a minute to bake this dish, and overcooking it will result in a dry and hard mug cake opposite to the fudgy, rich, and moist one that we are trying to achieve.
     a spoonful of the 3 ingredients peanut butter mug cake on the table.

    Serving Suggestions

    This mug cake is a simple treat that goes well with almost anything you can think of. You may pair it with Chocolate Milk Tea or Chocolate Bubble Tea depending on your preference.

    Personally, I like to serve along side my Greek Yogurt Smoothie in the morning.

    You can also serve it alongside chicken or spaghetti for more meals.

    Recipe FAQs

    Why does my mug cake have a bitter taste to it?

    Sometimes peanut butter, aside from being sweet and nutty, can taste a little bit bitter, and to remove this undesirable taste, consider adding more sugar to the batter.

    Can I make this recipe without an egg?

    Absolutely! Substitute your egg with one or two tablespoons of whole milk. Your mug cake won't be as moist without the egg, but the milk will still help combine all the dry ingredients as one.

    More Peanut Butter Recipes

    • Peanut Butter Flapjacks
    • Peanut Butter Pancakes
    • No-Bake Peanut Butter Pie
    • Lazy Cake (no bake chocolate biscuit cake).
      Lazy Cake - Chocolate Biscuit Cake
    • Cornbread cake topped with butter and honey.
      Easy Cornbread Cake Recipe
    • Chocolate Orange Cake.
      Easy Chocolate Orange Cake Recipe
    • marzipan loaf cake drizzled with sweet syrup.
      Easy Marzipan Cake

    Thanks for dropping in! Make sure to follow Healthy Life Trainer on Facebook and Pinterest to keep up-to-date with all new recipes.

    3 Ingredient Peanut Butter Mug Cake
    Print Pin
    5 from 3 votes

    3 Ingredient Peanut Butter Mug Cake

    This 3 ingredient peanut butter mug cake is an easy, quick and no-fuss treat. It is flourless, fudgy, made in the microwave in just 1 minute, and so good!
    Course Dessert
    Cuisine British
    Diet Gluten Free
    Prep Time 1 minute minute
    Cook Time 1 minute minute
    Total Time 2 minutes minutes
    Servings 1 mug
    Calories 447kcal
    Author Radwa

    Equipment

    • Microwave
    • whisk
    • Microwave-safe mug

    Ingredients

    • 3 tablespoon peanut butter
    • 2 tablespoon granulated sugar
    • 1 large egg
    • 1 teaspoon chocolate chips (optional for topping )

    Instructions

    • In a small mixing bowl, whisk together the 3 ingredients until combined.
      3 tablespoon peanut butter, 2 tablespoon granulated sugar, 1 large egg
    • Transfer the batter into a microwave-safe mug or ramekin. Scatter chocolate chips on top (if using).
      1 teaspoon chocolate chips
    • Microwave for 45 seconds-1 minute. Remove from the microwave and allow it to sit for a minute before eating.

    Notes

    • The mug that you use must be sturdy and heat-resistant (you don't want your cup to crack) but also not become excessively hot to hold the mug cake while it is being baked in the microwave.
    • To remove the mug from the microwave, place an oven glove or a tea towel around the handle. Allow the mug cake to cool for a few minutes before cutting into it.
    • Do not overcook! It takes no longer a minute to bake this dish, and overcooking it will result in a dry and hard mug cake opposite to the fudgy, rich, and moist one that we are trying to achieve.
    Variations
    • An easier substitute for granulated sugar is brown sugar.
    • There are many options for toppings you may choose from other than chocolate chips. For soft and creamy toppings, you may top your mug cake with whip cream. If you want a pillowy texture, you may consider using marshmallows instead. However, if you prefer your homemade mug cake as it is, you don't have to add any toppings at all.

    Nutrition

    Serving: 1serving | Calories: 447kcal | Carbohydrates: 34g | Protein: 18g | Fat: 29g | Saturated Fat: 7g | Polyunsaturated Fat: 8g | Monounsaturated Fat: 13g | Trans Fat: 1g | Cholesterol: 186mg | Sodium: 292mg | Potassium: 381mg | Fiber: 3g | Sugar: 29g | Vitamin A: 270IU | Calcium: 49mg | Iron: 2mg
    Tried this Recipe? Pin it for Later!Mention @HealthyLifeTrainer or tag #healthylifetrainer!

    About Radwa

    Hi, I am Radwa! I've always been fond of food—seriously, it's my love language. I share my tried-and-true recipes and provide easy, step-by-step recipes that anyone can follow.

    Comments

    1. jaime geiser says

      May 23, 2024 at 10:45 pm

      How much brown sugar do I use instead of white?

      Reply
      • Radwa says

        May 24, 2024 at 11:32 pm

        The same amount.

        Reply
    2. Lilly Brown says

      October 14, 2023 at 7:02 am

      Yummy recipe, works well but I added only 1 ½ tablespoons of sugar and it was still very sweet so you might want to consider reducing the amount of sugar.

      Reply
    3. Nicole Hammer says

      January 15, 2023 at 3:05 am

      I love easy recipes, especially for desserts.

      Reply
    4. Dian says

      July 18, 2022 at 7:18 pm

      Yum, used brown sugar and put a broken chocolate cookie in it.

      Reply
    5 from 3 votes (3 ratings without comment)

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    Healthy Life Trainer

    Hello! I’m Radwa, A wife and mother. Also, I am the recipe maker and food photographer behind Healthy Life Trainer. I love making new, simple and quick recipes every day.

    More about me→

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