Single-Serve Vegan Oatmeal Cookie in a Mug

Oatmeal Cookie in a Mug with only 4 ingredients needed! This easy single-serve dessert recipe requires 5 minutes and no baking.

4-Ingredient Oatmeal Cookie in a Mug with a bite taken out

You know where this is going.

It’s a Friday night, you’re ultra pumped about how hard you sweated in hot pilates class this week, you can feel an aching in your bones for something sweet and oatmeal-esque but you don’t want a full batch of cookies lurking around your counter space, you then…

Bake a single-serve oatmeal cookie in a mug.

This one is gluten-free, dairy-free, studded with chocolate chips, and has that amazing oatmeal flavor. 

Plus it’s ready in less than 5 minutes…not shabby for those times you have a hankering for a little something luscious.

Let’s make it!

How to Make Oatmeal Cookie in a Mug:

Add the gluten-free flour, coconut sugar, baking soda, oats, coconut oil, water, and sea salt to a mug or measuring cup and stir well until a thick dough forms.

Ingredients for oatmeal cookie in a measuring cup

Stir in the chocolate chips (if adding).

Oatmeal cookie ingredients in a mug with chocolate chips

Microwave on high 40 to 60 seconds, until cookie has set up.

Dive in with a spoon and enjoy!

Baking Instructions:

If you don’t own or operate a microwave, no problem! Simply stir up all of the ingredients in a mug, place the mug on a cookie sheet, and bake at 350 degrees F (preheated) for 25 to 30 minutes. Allow the mug to cool before diving in!!

That single-serve dessert life!

More Single-Serve Desserts in a Mug:

My cookbook, Paleo Power Bowls, is now available! CLICK HERE to check it out. Thank you for your support!

If you make this recipe, please feel free to share a photo and tag @TheRoastedRoot on Instagram!

Oatmeal Cookie in a Mug

Course: Dessert
Cuisine: American
Keyword: coconut oil, coconut sugar, oatmeal, quick oats
Prep Time: 5 minutes
Cook Time: 1 minute
Servings: 1 cookie
Author: Julia

Gluten-free oatmeal cookie in a mug with chocolate chips - made with only a few basic ingredients. Vegan!



Optional Add-ins


  1. Add all ingredients in the order in which they appear to a microwave-safe mug or measuring cup. Stir in the chocolate chips (if adding).

  2. Microwave on high 40 to 60 seconds, until cookie has set up.

Single-Serve Oatmeal Cookie in a Mug - gluten-free, refined sugar-free, dairy-free, vegan, egg-free

Never Miss a Post!


  1. Allison

    Any ideas on how to do this since I don’t own a microwave? Maybe keep the ingredients in a Pyrex measuring cup and bake in the toaster oven for 8-10 minutes? What do you think?

    1. Julia Post author

      Hi Allison,

      I’m not sure how long it would take in a toaster oven, as I’ve never made a mug dessert in a toaster oven 🙁 In a regular oven, it takes 28-30 minutes at 350. Sorry I couldn’t be more helpful!


Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.