Oatmeal Packet Mug Muffin

Ann Fulton

By Ann Fulton

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Oatmeal Packet Mug Muffin - You choose the flavor in these healthy, protein-rich, single-serve muffins that can be made with just four easy ingredients!

You choose the flavor in these healthy, protein-rich, single-serve muffins that can be made with just four easy ingredients!



Cooking classes aren’t part of my day-to-day job description, but over the course of a year I teach a handful of them.

Sometimes a friend or acquaintance requests a special themed class to enjoy with a small group (which I often run from my own kitchen), and I always enjoy volunteering my time to school groups.

Recently a 13-year-old boy requested a cooking class instead of a birthday party.  That was awesome!

During these classes, I love to throw in an “extra” or two — meaning a quickie recipe that can be whipped up at a moment’s notice and may end up filling a void when a wholesome meal or snack is needed ASAP.

After sharing Homemade Instant Oatmeal Packets earlier this week, it seemed only fitting to follow up with the following single-serve mug muffins.  You can absolutely use the homemade packets, but your favorite store-bought alternative works just as well.

Oatmeal Packet Mug Muffin - You choose the flavor in these healthy, protein-rich, single-serve muffins that can be made with just four easy ingredients!

I’ve long made these microwaveable muffins for a quick breakfast or snack for my family. I’ve personally eaten countless of them and have demonstrated the speedy recipe as an aforementioned “extra” in several cooking classes.

The results are consistently positive, and people report loving the ease, flavor, and ability to customize.  Several have even reported stopping by the grocery store on the way home from the class to purchase instant oatmeal!

For sure, my nieces and I had lots of fun the day we assembled the homemade instant oatmeal packets (tasting quite a few of the flavors, of course!).  What they enjoyed most, however, was when I taught them how to transform a simple packet of oatmeal into a protein-rich muffin.

Oatmeal Packet Mug Muffin - You choose the flavor in these healthy, protein-rich, single-serve muffins that can be made with just four easy ingredients!

For those who may forever think of oatmeal as mushy and unappealing, the following microwaveable muffin offers a novel, grab-and-go alternative.  Oatmeal for the win! 👊

  • Quick
  • Easy
  • Kid-friendly
  • 4 basic ingredients 
  • Customizable
  • Whole grain
  • Gluten-free
  • Dairy-free
  • Protein of one whole egg
  • Fun!
Homemade Instant Oatmeal Packets  ~  Mix and match an extensive list of options to create healthy and economical alternatives to the store-bought packets.  Kid- and adult-friendly!

Homemade Instant Oatmeal Packets ⇧⇧ are a fun project and can be customized in countless ways, but store-bought instant oatmeal packets work quite well for these muffins, too.

I’ve included lots of options so you can experiment with this speedy recipe and customize to taste. The muffins may be prepared the night before for a truly grab-and-go breakfast.

Oatmeal Packet Mug Muffin
Yield: 1 muffin
You choose the flavor in these healthy, protein-rich, single-serve muffins that can be made with just four easy ingredients!
  • 1 single-serve instant oatmeal packet, flavor of choice*
  • 1 medium or large egg
  • 1/4 cup (60 grams) mashed very ripe banana, applesauce, apple butter, or pumpkin butter
  • 1/2 teaspoon baking powder
  • Optional mix-ins: 1 tablespoon shredded coconut, raisins or other dried fruit bits, and/or nuts

Mix all of the ingredients together. You can do this directly in the microwave-safe mug (or ramekin or small bowl) in which you will cook the muffin, just make sure to stir down to the bottom to fully incorporate the ingredients. Tip: There’s no need to grease the mug.  Do use something with a capacity of approximately twice the size of the amount of batter. The muffin will rise a lot while cooking, and you don’t want it to overflow.

Wipe the rim of the mug if it got a little messy while mixing.  If you wish, sprinkle the top of the uncooked muffin with a pinch or two of oats, some shredded coconut, etc. — this is primarily for a pretty look.  Let sit on the counter for at least 10 minutes or up to 2 hours. You may also cover and store in the refrigerator for up to 24 hours. The rest time gives the oats time to plump up and allows for more even cooking.

Microwave on full power for 60 to 90 seconds (adding 15-20 seconds when cold from the fridge) or until the muffin is no longer moist on top and the center is just cooked through. (There’s no need to stir again prior to cooking, even when refrigerated overnight. Until you know how long it will take to cook the muffin in your microwave, check it a little early and add additional cooking time in 15-second intervals, as needed. If you want to be certain the muffin is cooked through, use a quick read thermometer; the internal temperature should read between 200 and 205 degrees F.  In my microwave, the muffins take one minute when cooked in a flatter, wider ramekin and 15-20 seconds more when cooked in a narrower, deeper mug.)

Gently pry the muffin out of the cup with a butter knife. Be careful; it will be very hot. The edges will be very moist at first from the steam in the mug, but this will quickly evaporate as the muffin cools for a minute or two. Optionally, allow the muffin to cool completely, cover, and store in the refrigerator.

Possible flavor combinations:

  • Blueberry oatmeal/mashed banana/shredded coconut
  • Brown sugar-maple oatmeal/pumpkin butter/pecans/dried cranberries
  • Apples and cinnamon oatmeal/applesauce or apple butter/walnuts/raisins

*To make the muffins gluten-free, use certified gluten-free oatmeal packets.  Bakery on Main makes a healthy, certified gluten-free, lower-sugar option with some fun flavors.  I like their “maple multigrain muffin” variety and then use applesauce or pumpkin butter in the recipe.  I’ve also made a version with mashed banana and a tablespoon of PB2.  Feel free to mix and match and be creative.

**I used to add 1-2 teaspoons of maple syrup to the recipe but now forego it.  Feel free to mix in a sweetener of choice if you prefer a sweeter muffin.  Conversely, you could start with plain instant oatmeal and experiment with savory flavors.

The Fountain Avenue Kitchen https://fountainavenuekitchen.com/



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    1. AnnAnn Post author

      I add the chia and flax to my homemade packets to ratchet up the nutritional content. If using store-bought packets, you could certainly add a couple of teaspoons. If you add too much, you may need an extra tablespoon or two of liquid. (I’d add your milk of choice.) If you want the ease of store-bought packets, the reliability of the recipe as written, AND chia and flax, try Bakery on Main instant oatmeal packets. They include chia and flax with the oats. Enjoy!

  1. AvatarJane

    Love the muffin in a cup, but my main way to cook is a Breville Smart Oven. Do you suggest an oven temp and time for this recipe?

    1. AnnAnn Post author

      Hi Jane, Here are directions for various sizes that I tried in my oven, preheated to 350 degrees F: for a 2-cup ramekin or mini loaf pan, bake for approximately 15 minutes; for a 1-cup ramekin, bake for about 18 minutes. You should be able to adjust from there based on your oven and specific proportions of baking dish used. I hope this helps and that you enjoy!

      1. AvatarMary Jane Garner

        Thanks! I’m an octogenarian, so I love finding mini-recipes. And I love quick and easy that includes healthy, (even though my sugar craving never goes away.) I don’t own a microwave so I appreciate the oven instructions. Jane

  2. AvatarNancy

    Made one today. It was pretty good. Huge! I hate oatmeal and know it’s good for me so I will try these muffins in place of my store-bought granola bars. Thanks for the recipe.

    1. AnnAnn Post author

      So happy to make a possible fan out of someone who’s been firmly in the no-oatmeal camp! Thanks for letting me know, Nancy!

  3. AvatarAmie

    This is my regular breakfast! I get high protein oatmeal and use banana. I often add cinnamon too. A few mini chocolate chips makes it especially delicious :). Highly recommend!!

  4. JanJan Post author

    I’ve been making these this past week and I can’t believe how much more filling they are than my typical bowl of oatmeal. This is my new breakfast!

  5. MelissaMelissa Post author

    I’ve made these at least 20 times since you posted the recipe a month or so ago. I am completely in love with the utter simplicity as well as the fact that they are so very satisfying!

  6. AvatarJoanne

    Quick and very filling! I used a pumpkin spice oatmeal packet and applesauce with cinnamon. Next time I’ll throw in some nuts too. I think I’d also eat it with skim milk as a single portion of baked oatmeal.

    1. AnnAnn Post author

      Hi Kristel, I haven’t made these with just the egg whites. The texture may be slightly different, but it would likely work and certainly be worth trying. If you do try, I’d love to know what you think!

    1. AnnAnn Post author

      Hi Stacey, You can. When I do this, I usually let the mixture sit on the counter for an hour or so to allow the sturdier oats to absorb some of the liquid. Also, you may want to add additional flavorings when using plain oats.

  7. AvatarAnn H.

    This is FANTASTIC! Ate mine right out of the mug with a dollop of butter on top. I usually hate oatmeal. Thanks. Delicious and fun.

  8. AvatarLynne

    Mixed it up last night and microwaved it this morning. Thanks for the temperature tip! It is great to have an ” instant” breakfast muffin that I can share.

    1. AnnAnn Post author

      I’m so happy this was a success, Lynne, and I love the temperature trick, too. It takes all the guesswork out of when baked goods are done!

  9. AvatarCindy Michaud

    I buy oatmeal in the box but could pre-mix packets for camping. How much raw, quick cook oats per muffin packet?

    1. AnnAnn Post author

      Hi Cindy, Most instant oatmeal packets weigh in the 45 to 50 gram range, or roughly 1/2 cup. If you’re using plain oats in place of a flavored packet, you may like to add a little cinnamon, brown sugar, etc.