There’s a certain joy that comes with whipping up a freshly baked cookie, but what if I told you that you could have that warm, gooey peanut butter goodness in just four minutes? This quick and easy peanut butter cookie in a mug is my go-to solution for those moments when cravings strike but time is tight. Imagine the comforting aroma of warm peanut butter filling your kitchen, wrapping you in a cozy embrace while you savor each decadent bite-no oven required!
Perfect for busy individuals or anyone looking to satisfy a sweet tooth, this microwavable delight caters to your cravings without the hassle of preparing a full batch. Plus, you can easily customize it to accommodate gluten-free or vegan diets! So grab your favorite mug and prepare for a delightful treat that's as simple as it is satisfying. What better way to indulge than with a warm cookie made just for you?

Why You’ll Love the Quick and Easy Peanut Butter Cookie in a Mug
Simplicity at Its Best: This recipe is incredibly straightforward, allowing anyone to whip up a treat with minimal effort and just a few ingredients.
Gooey Goodness: Experience the warm, melt-in-your-mouth texture that perfectly combines nostalgia and convenience.
Customizable: Make it your own! Add chocolate chips, try almond butter, or go gluten-free with almond flour. The options are endless!
Microwave Magic: In just four minutes, you can have a delicious dessert ready to enjoy. It’s perfect for satisfying evening cravings without the wait.
Perfect For One: Ideal for solo dessert nights, this recipe serves one indulgent cookie, so no leftovers and no commitment-a sweet treat just for you!
If you love easy-to-make desserts, explore more options with our delightful single-serving cookie recipes.
Quick and Easy Peanut Butter Cookie in a Mug Ingredients
For the Cookie
• Unsalted Butter - Adds richness and moisture; omit for a lower-fat option or replace with coconut oil.
• Granulated Sugar - Provides sweetness and structure; substitute with coconut sugar for a lower glycemic index.
• Brown Sugar - Contributes depth of flavor and moisture; can be replaced with more granulated sugar for a lighter taste.
• Peanut Butter - The star of this mug cookie; use creamy or chunky for varied texture; almond or cashew butter are good swaps.
• Milk - Necessary for moisture and binding; any milk works, whether dairy or plant-based according to your preference.
• Vanilla Extract - Elevates flavor; omit for a more intense peanut experience.
• All-Purpose Flour - Gives structure to the cookie; substitute with almond flour for a gluten-free version.
• Baking Powder - Acts as a leavening agent; omit for denser cookies or swap it with baking soda for texture variation.
• Salt - Balances sweetness and enhances overall flavor; use sea salt for a different taste profile.
• Chocolate Chips (optional) - Adds a rich twist; omit for a classic treat or use carob chips for a unique flavor.
Enjoy whipping up this quick and easy peanut butter cookie in a mug to satisfy your sweet cravings!
How to Make Quick and Easy Peanut Butter Cookie in a Mug
Mix Ingredients: In a microwave-safe mug, combine melted butter, granulated sugar, brown sugar, peanut butter, milk, and vanilla extract. Stir everything together until the mixture is smooth and well-blended.
Add Dry Ingredients: Sprinkle in the all-purpose flour, baking powder, and salt. Gently stir this mixture until a smooth dough forms, ensuring no dry ingredients remain.
Incorporate Chocolate Chips: If you’re adding chocolate chips, fold them into your cookie dough until evenly distributed throughout.
Microwave: Place the mug in the microwave and cook on high for 40-60 seconds. Keep a close eye on it; the cookie should be set but soft in the center for the perfect gooey texture.
Cool and Enjoy: Allow the cookie to cool for 1-2 minutes before digging in-this resting time helps the cookie finish cooking without drying out.
Optional: Top with a scoop of vanilla ice cream or a drizzle of chocolate sauce for extra indulgence.
Exact quantities are listed in the recipe card below.

Expert Tips for Quick and Easy Peanut Butter Cookie in a Mug
- Watch the Time: Microwaves vary in power; cook for 40-60 seconds, but check at the 40-second mark to avoid overcooking.
- Resting Period Matters: Let the cookie cool for a couple of minutes after microwaving to achieve the ideal chewy texture without drying.
- Prep for Success: Have your dry ingredients ready to mix for a super quick sweet fix on those busy nights when cravings hit.
- Customize Flavors: Feel free to experiment with almond butter or vegan milks for a personalized touch to your quick and easy peanut butter cookie in a mug.
- Use Room Temperature Ingredients: For a smoother blend, ensure your butter and milk are at room temperature before mixing.
What to Serve with Quick and Easy Peanut Butter Cookie in a Mug?
Satisfy your sweet cravings by building a delightful meal that complements your warm, gooey mug cookie.
Vanilla Ice Cream: A scoop of creamy vanilla ice cream perfectly contrasts the warm, nutty cookie, creating a delightful melty experience.
Fresh Berries: The tartness of raspberries or strawberries adds a refreshing balance to the rich peanut butter flavor, enhancing each sweet bite.
Chocolate Sauce Drizzle: A drizzle of warm chocolate sauce brings an indulgent twist, turning your cookie into an irresistible dessert delight.
Cup of Coffee: The bold flavors of coffee harmonize beautifully with the cookie’s sweetness, making for a cozy pairing during quiet evenings.
Milk: A classic accompaniment, a cold glass of milk enhances the nostalgic childhood experience of enjoying peanut butter cookies.
Nutty Granola: Crunchy granola sprinkled on top adds texture and a wholesome note, rounding off your dessert with a crunchy element.
Chilled Coconut Water: To cleanse the palate, the light, refreshing taste of coconut water offers a perfect counterbalance to the richness of the cookie.
Herbal Tea: A calming cup of herbal tea, such as chamomile or mint, creates a soothing experience, enhancing the cozy feeling of your treat.
Chocolate-Covered Pretzels: The salty sweetness of chocolate-covered pretzels provides an exciting contrast, elevating your dessert moment to a new level of fun.
How to Store and Freeze Quick and Easy Peanut Butter Cookie in a Mug
- Room Temperature: Enjoy fresh for the best taste. If you need to store, keep it covered and consume within 1 day for optimal flavor.
- Fridge: Store in an airtight container for up to 3 days. Reheat briefly in the microwave (10-15 seconds) to restore softness if needed.
- Freezer: You can freeze the unbaked cookie dough in a mug. Wrap tightly and store in the freezer for up to 1 month. When ready, microwave directly from frozen, adding a few extra seconds to the cooking time.
- Reheating: For previously cooked cookies, reheat in the microwave for about 10-15 seconds. Enjoy your quick and easy peanut butter cookie in a mug as if it were freshly made!
Make Ahead Options
These Quick and Easy Peanut Butter Cookies in a Mug are perfect for meal prep! You can prepare the dry ingredients-flour, baking powder, sugar, and salt-up to 24 hours in advance. Just store them in an airtight container to keep them fresh. When you’re ready to enjoy your cozy treat, mix in the wet ingredients and microwave as directed. To maintain quality, avoid pre-mixing the wet ingredients too far ahead of time, as this can affect the cookie’s texture. Simply combine everything just before cooking for gooey, delicious results that save you time on busy nights while still satisfying your sweet tooth!
Variations & Substitutions of Quick and Easy Peanut Butter Cookie in a Mug
There’s so much fun to be had when customizing this delightful treat-let your imagination run wild with these delicious twists!
Nut Butter Swap: Use almond or sunflower seed butter for a different nutty flavor that remains equally satisfying.
Gluten-Free Option: Substitute all-purpose flour with almond flour or a gluten-free flour blend for an alternative that everyone can enjoy.
Vegan Delight: For a plant-based version, replace the butter with coconut oil and the milk with almond or oat milk for a creamy touch.
Chocolatey Goodness: Fold in mini chocolate chips or butterscotch chips for a decadent twist that enhances the cookie’s sweetness.
Spice It Up: Add a sprinkle of cinnamon or a dash of nutmeg to the dough for a warm, spiced flavor that brings extra comfort.
Crunch Factor: Mix in crushed peanuts or walnuts for added texture and a delightful crunch that contrasts with the soft cookie.
Sweet Swirl: Want an extra burst of flavor? Drop in a spoonful of your favorite jam or chocolate spread after mixing the dough for a gooey surprise.
Extra Sweetness: Drizzle honey or maple syrup on top after cooking for a glimmering finish that’ll take your mug cookie to new heights.
Get creative and transform this quick and easy peanut butter cookie in a mug into your personalized masterpiece!

Quick and Easy Peanut Butter Cookie in a Mug Recipe FAQs
What type of peanut butter should I use?
You can use either creamy or chunky peanut butter for this recipe, depending on your texture preference. Creamy peanut butter will create a smoother cookie, while chunky will provide delightful bits of peanut in every bite. If you’re looking for alternatives, almond butter or cashew butter are great substitutes that bring unique flavors to the mug cookie.
How should I store leftover cookie dough or cookies?
For the best taste, enjoy the cookie fresh. If needed, you can store it covered at room temperature for up to 1 day. Alternatively, place it in an airtight container and keep it in the fridge for up to 3 days. To restore its gooey texture, simply reheat in the microwave for 10-15 seconds before indulging.
Can I freeze the cookie dough?
Absolutely! To freeze the unbaked cookie dough, wrap it tightly in plastic wrap or place it in an airtight container. It can be stored in the freezer for up to 1 month. When you’re ready to bake, there is no need to thaw; just microwave it directly from the freezer. Be sure to add a few extra seconds to the cooking time for perfectly warm results.
What if my cookie turns out dry?
If your cookie turns out dry, it may have been microwaved for too long. To avoid this, keep a close eye on your mug cookie while cooking, starting with 40 seconds and checking for a soft center. If you’re using a lower wattage microwave, you may need to adjust the time slightly. Always allow the cookie to rest for a couple of minutes after microwaving, as it continues to cook slightly during this time.
Are there any dietary considerations I should be aware of?
Yes, this cookie can easily be adapted for various dietary needs. For a gluten-free version, substitute all-purpose flour with almond flour or a gluten-free baking blend. To create a vegan option, simply replace unsalted butter with a plant-based alternative and use a non-dairy milk. Always ensure that your peanut butter is free from any allergens if you’re preparing this for someone with nut allergies.
How can I customize the flavors of my cookie?
There are so many ways to customize your quick and easy peanut butter cookie in a mug! Add in chocolate chips, sprinkle some sea salt on top, or mix in chopped nuts for added texture. You could even try swapping peanut butter for almond butter or sunflower seed butter to experiment with new flavors. Happy baking!

Irresistibly Gooey: Quick and Easy Peanut Butter Cookie in a Mug
Ingredients
Equipment
Method
- In a microwave-safe mug, combine melted butter, granulated sugar, brown sugar, peanut butter, milk, and vanilla extract. Stir everything together until the mixture is smooth and well-blended.
- Sprinkle in the all-purpose flour, baking powder, and salt. Gently stir this mixture until a smooth dough forms, ensuring no dry ingredients remain.
- If you're adding chocolate chips, fold them into your cookie dough until evenly distributed throughout.
- Place the mug in the microwave and cook on high for 40-60 seconds, checking at the 40-second mark.
- Allow the cookie to cool for 1-2 minutes before enjoying.

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