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This snickerdoodle mug cake is the fastest way to get that warm, cinnamon-sugar snickerdoodle flavor without baking a full batch of cookies. It comes together in a single mug, in the microwave, in under 5 minutes.
What makes this version different from a regular cinnamon mug cake is the layering. Instead of mixing all the cinnamon sugar into the batter, you alternate spoonfuls of batter with sprinkles of cinnamon sugar, which creates little pockets of that classic snickerdoodle crunch in every bite. It is the closest you can get to my small batch snickerdoodle cookies in mug cake form.
Quick Look: Snickerdoodle Mug Cake
- 🍪 What it is: A single-serve snickerdoodle cake made in a mug in the microwave.
- ⭐ Why it works: Cream of tartar adds that tangy snickerdoodle flavor, and layered cinnamon sugar adds crunch.
- 💛 Why you’ll love it: Warm cinnamon-sugar dessert in under 5 minutes, no oven needed.
- ⚠️ What to watch for: Start checking at 1 minute so it doesn’t overcook.
Table of Contents
How Do You Make a Snickerdoodle Mug Cake?
To make a snickerdoodle mug cake, whisk together flour, sugar, baking powder, cream of tartar, cinnamon, and salt, then stir in milk, melted butter, and vanilla until smooth. Layer the batter in a greased mug with cinnamon sugar between each spoonful, then microwave for 1 to 1 ½ minutes until the cake is set and springy to the touch.
Cream of tartar is the key ingredient. It gives the cake that signature tangy snickerdoodle flavor and soft, chewy texture that separates a real snickerdoodle from a plain cinnamon cake. Skip it and you basically end up with my sugar cookie in a mug with cinnamon on top.
Why This Recipe Works
This one came out of a very specific kind of craving. I wanted something warm and cinnamony, I wanted it right now, and I absolutely did not want to turn on the oven. The microwave was the only way that was happening, and after some testing, the layering trick is what finally made it taste like a real snickerdoodle instead of a sad cinnamon muffin in a cup. The cream of tartar handles the flavor, and the alternating cinnamon sugar layers give you that snickerdoodle crunch in every bite.
Key Ingredients
Here are the ingredients you will need. Scroll down to the recipe card for full measurements.
- All-purpose flour: the base of the cake, providing structure. Measure by spooning and leveling to avoid a dry cake.
- Granulated sugar: sweetens the cake and gets used again in the cinnamon sugar layers.
- Baking powder: helps the mug cake rise in the short microwave time.
- Cream of tartar: the signature snickerdoodle ingredient. It gives the cake its subtle tang and keeps it tender. Do not skip this if you want real snickerdoodle flavor.
- Salt: balances the sweetness and makes the cinnamon taste more cinnamon-y.
- Ground cinnamon: goes in the batter and in the cinnamon sugar layers. It is the same cozy spice that makes my banana bread mug cake taste like fall.
- Milk: adds moisture and softens the crumb. Whole milk gives the best texture, but any milk works.
- Melted butter: adds richness and that buttery snickerdoodle flavor.
- Vanilla extract: rounds out the flavor and pairs with the cinnamon.
How to Make a Snickerdoodle Mug Cake
- Whisk the dry ingredients. In a small bowl, whisk together the flour, granulated sugar, baking powder, cream of tartar, ground cinnamon, and salt.
- Add the wet ingredients. Stir in the milk, melted butter, and vanilla extract until the batter is smooth and lump-free.
- Make the cinnamon sugar and start layering. In a separate small bowl, mix the remaining sugar and cinnamon. Grease a microwave-safe mug, add a spoonful of batter, and sprinkle it with cinnamon sugar.
- Keep layering. Repeat until all the batter is used, then finish with a generous final layer of cinnamon sugar on top. Those layers are what give you the snickerdoodle swirl.
- Microwave. Microwave on high for 1 to 1 ½ minutes. Start checking at 1 minute, the cake should look set and feel slightly springy in the center.
- Cool and enjoy. Let it cool for 1 to 2 minutes before digging in. The cinnamon sugar layer keeps cooking as it cools and sets into that classic crunchy snickerdoodle topping.
Expert Tips
- Spoon and level the flour. Scooping straight from the bag packs in too much flour and makes a dry mug cake.
- Don’t skip the cream of tartar. It’s what gives the cake that tangy, real snickerdoodle flavor instead of tasting like a plain cinnamon cake.
- Layer, don’t stir. Alternate spoonfuls of batter with cinnamon sugar for pockets of snickerdoodle crunch in every bite.
- Finish with a generous cinnamon sugar layer. It sets into that classic crunchy snickerdoodle top as it cools.
- Start checking at 1 minute. Microwaves vary. Pull it as soon as the center looks set and feels slightly springy.
- Make two mugs, not one big one. Doubling the batter in a single mug leaves the center raw while the edges overcook.
Once you get the hang of the layering trick, it works in so many of my microwave desserts for one, so keep that mug handy!
Snickerdoodle Mug Cake FAQs
If you’re out of milk, make your snickerdoodle mug cake with an equal amount of water plus an extra 1/2 teaspoon of melted butter to make up for the richness. Half-and-half or heavy cream cut with a splash of water works too.
Yes! For a vegan snickerdoodle mug cake, use plant-based butter (I like the stick kind, not the spread) and a dairy-free milk. Almond and cashew milk both work well, and oat milk makes it a little denser but still tastes great. Melted coconut oil or a neutral oil can stand in for the butter too.
Yes. Swap the all-purpose flour in the snickerdoodle mug cake for a 1:1 gluten-free flour blend that already contains xanthan gum, like Bob’s Red Mill 1-to-1 or King Arthur Measure for Measure. The texture is slightly softer but it still tastes like a snickerdoodle.
Yes. Replace 1 tablespoon of the flour in the snickerdoodle mug cake with 1 tablespoon of vanilla protein powder and add an extra teaspoon of milk. Whey-based protein works best. Plant-based protein tends to make mug cakes gummy, so add an extra 1/2 teaspoon of melted butter if that’s what you have.
I recommend making two single snickerdoodle mug cakes instead of doubling the batter in one mug. A doubled mug stays raw in the center while the edges overcook. Microwave the two mugs one at a time for 1 to 1 1/2 minutes each. The same goes for my brownie in a mug.
Fun Variations
- Chocolate chip snickerdoodle: stir 1 tablespoon of mini chocolate chips into the batter before layering, or go full classic with my chocolate chip cookie in a mug.
- Peanut butter swirl: dollop a teaspoon of creamy peanut butter between the batter layers. Peanut butter and cinnamon are so good together, which is why my peanut butter mug cake is on constant rotation.
- Cinnamon chip upgrade: swap in cinnamon chips for chocolate chips to double down on the cinnamon.
How to Serve This Snickerdoodle Mug Cake
- With vanilla ice cream (my homemade vanilla ice cream if you have some in the freezer) while the cake is still warm so it starts to melt into the layers.
- Topped with cinnamon whipped cream (1 cup heavy cream + 2 tablespoons powdered sugar + ½ teaspoon cinnamon, whipped to soft peaks) for a snickerdoodle trifle vibe.
- Drizzled with salted caramel or a spoonful of browned butter for a bakery-style dessert.
More Quick Mug Desserts
Mug Desserts
The Softest Sugar Cookie in a Mug ever!
Mug Desserts
Easy 60-Second Chocolate Chip Mug Cookie
Small Batch
The Best Small Batch Snickerdoodle Cookies
If you microwaved yourself this snickerdoodle mug cake, come tell me! Leave a ⭐ star rating and a comment below, and let me know if you went with ice cream on top (you should). Enjoy every cinnamon-sugar bite!!
Snickerdoodle Mug Cake Recipe
Ingredients
- 1/4 cup all-purpose flour
- 2 tbsp sugar
- 1/4 tsp baking powder
- 1/4 tsp ground cinnamon
- Pinch of cream of tartar
- Pinch of salt
- 2 tbsp milk at room temperature
- 1 & 1/2 tbsp unsalted butter melted
- 1/2 tsp vanilla extract
Cinnamon Sugar Topping:
- 1/2 tbsp sugar
- 1/4 tsp ground cinnamon
Instructions
- In a small bowl mix the flour, sugar, baking powder, cinnamon, cream of tartar, and salt.1/4 cup all-purpose flour, 2 tbsp sugar, 1/4 tsp baking powder, 1/4 tsp ground cinnamon, Pinch of cream of tartar, Pinch of salt
- Mix in the milk, melted butter, and vanilla extract until batter forms.2 tbsp milk, 1 & 1/2 tbsp unsalted butter, 1/2 tsp vanilla extract
- In a small bowl, mix the sugar and cinnamon for the topping.1/2 tbsp sugar, 1/4 tsp ground cinnamon
- Add a spoonful of the cake batter into a lightly greased mug, sprinkle with the cinnamon sugar, repeat the process until you are done with the cake batter. Make sure to finish with a generous layer of cinnamon sugar.
- Microwave on high for 1 to 1 1/2 minutes. Start checking at the 1-minute mark to avoid overcooking. The cake should rise and be slightly springy to the touch.
- Cool slightly and enjoy!
Video
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
it was delicious! definitely reccomend this recipe!
Yay! So happy you enjoyed it 🙂
I just made this Snickerdoodle mug cake tonight and I absolutely loved it! It tastes like a Snickerdoodle cookie but tastier. I think it’s even better than the other Snickerdoodle mug cake I made even though that recipe was good too. Will make this again and again.
This mug cake tastes just like a cinnaon sugar donut. I swapped the butter for vegetable oil and the milk for oat milk to make it vegan, and I used brown sugar. It still came out delish!
Those are great swaps to make it vegan!
I’m picky about my baked goods and always a bit weary of mug cakes but this one was delicious!! Perfect cake texture and comes together so quickly. I didn’t use room temp milk because I was impatient (just added it to the melted butter for a min or so before mixing) and it still came out fire. If you’re questioning whether to make this, stop and just go make it!
YEEESSSS!! I’m so glad you like them haha