No bake cookies are always a favorite around here. But what about when you just want one cookie without making all the cookies? Which is where we are today, a single serve no bake cookie in a mug that only takes a couple of minutes to toss together.

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Single Serve No Bake Cookie in a Mug
I love no bake cookies so much. They call to me from the fridge. I always eat way too many. Always. But when you make just one cookie, you can’t overindulge, you eat the one you made and move on. Or make another. But I try to hold out against that.

This is a no bake peanut butter cookie recipe for one. But you could definitely omit the peanut butter for a peanut-free version.
Ingredients You Need:
- 1 tbsp margarine
- 1 tbsp milk
- 3/4 tbsp cocoa powder
- 1 tbsp peanut butter
- 1/8 cup white sugar
- 1/3 cup of instant oats
How to Make A Single Serve No-Bake Cookie in a Mug
Melt 1 tbsp of margarine in a microwave-safe bowl until it is just about liquid.

Add sugar, milk, and cocoa powder to the bowl and mix. Microwave for one minute.

Add in peanut butter, and mix to start melting the peanut butter. Add in oats and mix well.

Shape into a cookie on a plate and refrigerate for 5 minutes and then enjoy.
These chocolate no bake cookies not going to leave you disappointed or looking for more chocolate to satisfy your craving.

This is a delicious cookie, perfect for making in the summer. No heating up the oven. Very little heat or time in the microwave involved. Plus, cold cookies are a nice treat in the heat of summer after the kids go to bed or while you hide in the closet.

No Bake Cookie in a Mug
Today we are having a single serve no bake cookie in a mug that only takes a couple of minutes to toss together and gives you a cool treat,
Ingredients
- 1 tbsp margarine
- 1 tbsp milk
- 3/4 tbsp cocoa powder
- 1 tbsp peanut butter
- 1/8 cup white sugar
- 1/3 cup of instant oats
Instructions
- Melt 1 tbsp of margarine in a microwave safe bowl until it is liquid.
- Add sugar, milk, and cocoa powder to bowl and mix.
- Microwave for one minute.
- Add in peanut butter, and mix to start melting the peanut butter.
- Add in oats and mix well.
- Shape into a cookie and refrigerate for 5 minutes and then enjoy.
Single Serve No Bake Chocolate Cookie in a Mug: Swaps, Add-Ons, and Flavor Ideas
A single-serve no bake chocolate cookie in a mug is the ultimate quick dessert. Perfect for late-night cravings, portion control, or when you donāt want to turn on the oven, this no-fuss treat is ready in minutes. With a few simple substitutions and add-ons, you can create endless variations to fit your mood, dietary needs, or pantry staples.

Ingredient Substitutions
Sweeteners
- Swap white sugar with coconut sugar for a caramel-like depth.
- Use maple syrup or honey for natural sweetness and a softer texture.
- For a low-carb option, try monk fruit sweetener or erythritol.
Chocolate Options
- Replace cocoa powder with dark cocoa powder for a more intense, brownie-like flavor.
- Stir in melted dark chocolate chips for richness.
- Try white chocolate chips for a sweeter twist.
Butter Alternatives
- Use coconut oil or olive oil for a dairy-free option.
- Nut butters like peanut or almond butter create a thicker, creamier cookie base.
Milk Choices
-
Dairy milk can be swapped with almond milk, oat milk, or coconut milk for vegan-friendly or lactose-free variations.

Flavor Add-Ons
- Mini marshmallows for a sāmores-inspired cookie.
- Shredded coconut for texture and tropical flavor.
- Chopped nuts like pecans, walnuts, or almonds.
- Cinnamon or espresso powder for a bakery-style flavor boost.
- Peanut butter swirl for a chocolate-peanut butter combo.

Creative Serving Ideas
- Top with a scoop of vanilla ice cream for a hot-and-cold dessert.
- Add a drizzle of salted caramel sauce or chocolate syrup.
- Sprinkle with flaky sea salt before eating for a gourmet finish.
- Serve with fresh berries for a lighter pairing.
Make Ahead & Storage
While this recipe is designed for immediate enjoyment, you can pre-mix the dry ingredients in small jars for a DIY āmug cookie mix.ā When the craving hits, just add the wet ingredients, stir, and microwave. Leftovers (if you manage to save any) can be stored covered in the fridge for up to 24 hours, but the texture is best enjoyed fresh.
By experimenting with alternative ingredients and add-ons, you can turn this single-serve no bake chocolate cookie in a mug into a custom treat every time you make it.
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