Can I use a different kind of flour or protein powder?

Yes! You can swap out all‑purpose flour for a gluten‑free blend or even oat flour if that’s what you have. For the protein powder, vanilla works great, but other mild flavors might work too (just expect slight changes in texture or sweetness). Just make sure the protein powder isn’t overly gritty, or it may affect how smooth your PSL cake turns out.

What if I don’t have espresso—can I substitute?

Absolutely. Strong brewed coffee will do the trick in a pinch, or a small amount of instant espresso powder dissolved in hot water. The goal is to capture that coffee kick without adding a lot of liquid that unbalances the batter.

My cake came out too wet in the center—what did I do wrong?

If it’s too wet, likely you either didn’t microwave it long enough, the batter was too thick or too wet, or your microwave is weaker (lower wattage). Try increasing microwave time by 5‑10 seconds next time, or reduce liquid slightly. Also, letting it rest after cooking helps residual heat finish the job.

How do I get the best flavor soak‑in when pouring the remaining pumpkin spice mixture?

Make sure the cake is warm (but not scorching) when you pour in the remaining mixture. Use a chopstick or toothpick to poke holes so it seeps in deeply. If needed, pour slowly and let it sit a minute or two so the liquid has time to absorb before you add the whipped cream topping.

Pumpkin Spice Latte Mug Cake | Tisha's Veggie Eats

Name: Pumpkin Spice Latte Mug Cake
Prep time: 3 min
Cook time: 2 min
Total time: 5 min
Ingredients: 60 ml Nonfat Milk (Whole Foods); 15 ml Brewed Espresso; 5 g Pumpkin Puree (Whole Foods); 1/2 tsp Cinnamon; 1/4 tsp Nutmeg; 22 g All-Purpose Flour (King Arthur Flour); 15 g Vanilla Protein Powder (Quest); 1/2 tsp Baking Powder; Pinch of Salt; 30 g Pumpkin Puree (Whole Foods); 7 g Light Flaxseed Oil Butter (melted (Smart Balance)); 2/3 Pumpkin Spice Mixture; 9 g Reduced Fat Whipped Topping (Cool Whip); Flaky Sea Salt

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Your Favorite Fall Drink, Now in Cake Form

If there’s one thing fall has taught us, it’s that everything tastes better as a pumpkin spice latte. And this pumpkin spice latte mug cake takes that truth to the next level. It’s warm, cozy, fluffy, and infused with espresso and fall spices in every bite.

A pumpkin spice latte mug cake served on a white plate, topped with a dollop of whipped cream and drizzled with a pumpkin spice latte mixture.

You’re looking at a single-serve pumpkin mug cake that delivers all the classic PSL flavors—without the coffee shop run. Made with a simple mix of pantry staples and a dash of pumpkin purée, this little cake is the perfect treat when you want something sweet, fast, and just a little bit indulgent.

The best part? It packs in 17 grams of protein, thanks to a smart combo of ingredients that make it more than just dessert. Whether you’re craving something warm for breakfast or need a quick midday pick-me-up, this protein pumpkin mug cake has you covered.

And yes—it’s ready in under 5 minutes. Just mix, microwave, and top with a generous swirl of whipped cream for that true PSL mug cake experience. One bite and you’ll be hooked on this microwavable fall favorite.

Macros Per Serving

213 Cal | 28g Carbs | 3.5g Fat | 17g Protein

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Why You’ll Love This Recipe

This cozy PSL-inspired cake is perfect for chilly mornings, late-night cravings, or anytime you want to treat yourself to something sweet and protein-packed. It’s quick, easy, and so satisfying—basically the fall dessert of your dreams in under 5 minutes.

Quick & Cozy: This pumpkin mug cake takes just 90 seconds in the microwave—perfect for when you want something warm and comforting without waiting around.
Protein-Packed: With 17 grams of protein, this protein pumpkin mug cake is more than just a treat. It’s a secretly nourishing dessert that satisfies your sweet tooth and your macros.
Fall Flavors, Elevated: Espresso, cinnamon, and pumpkin spice give this PSL cake that signature flavor—just like your favorite latte, but in soft cake form.
One-Bowl Wonder: No fancy equipment or complicated steps. Just whisk your ingredients in a microwave-safe mug or bowl and you’re good to go.
Low Effort, Big Flavor: Minimal ingredients, major taste payoff. It’s the ultimate pumpkin microwavable cake for when you need dessert now.
Customizable Toppings: Add whipped cream, a drizzle of maple syrup, or even crushed nuts—whatever fits your fall mood.

Whether you’re a die-hard pumpkin spice latte fan or just in need of a quick dessert fix, this PSL mug cake checks every box.

Key Ingredients for this Pumpkin Spice Latte Mug Cake

To create this warm and cozy pumpkin spice latte mug cake, let’s take a closer look at what brings it all together. Each ingredient plays a role in delivering that signature PSL flavor while keeping the recipe light, protein-rich, and easy to whip up. Here’s what you’ll need for this fall-inspired single-serve dessert:

Nonfat Milk: Adds just the right amount of creaminess to your pumpkin spice mixture while keeping it light and macro-friendly.
Brewed Espresso: The essential PSL twist! A splash of brewed espresso infuses deep coffee flavor to make this a true pumpkin spice latte mug cake.
Pumpkin Purée: This star ingredient keeps the cake moist and naturally sweet while packing in seasonal flavor. It also adds fiber and nutrients!
Cinnamon: Brings that cozy fall warmth that pairs perfectly with pumpkin and espresso.
Nutmeg: Just a pinch enhances the spice blend and deepens the overall flavor of the PSL cake. All-Purpose Flour: Creates structure in the cake, resulting in a soft and fluffy texture with every bite.
Vanilla Protein Powder: This protein pumpkin mug cake gets its boost from a scoop of vanilla protein powder. It adds sweetness and body while keeping the macros strong.
Baking Powder: Helps the cake rise into a light, tender sponge in under two minutes.
Salt: Just a pinch brings balance and enhances the sweetness and spice.
Melted Light Butter: Adds richness and helps bind everything together for a smoother batter and moist crumb.
Reduced Fat Whipped Topping: A cloud of whipped topping turns this pumpkin microwavable cake into a true dessert moment.
Flaky Sea Salt: A final sprinkle of flaky salt heightens the sweetness and gives every bite a gourmet finish.

Substitution Options

For anyone wanting to customize their pumpkin spice latte mug cake, there’s plenty of flexibility built into the recipe. Whether you’re working with dietary preferences or just want to mix things up, here are some great alternatives to try:

Nonfat Milk: Feel free to use any milk you have on hand—almond milk, oat milk, or soy milk all work well in the pumpkin spice mixture.
Brewed Espresso: No espresso? No problem. Strong brewed coffee or even a pinch of instant espresso powder mixed into the milk will still bring out that PSL vibe.
Pumpkin Purée: If you’re out of pumpkin, mashed sweet potato or butternut squash purée can give you a similar creamy consistency and flavor.
Vanilla Protein Powder: Swap in your favorite plant-based or whey protein—just make sure it’s one you love the taste of, as it carries flavor here.
Light Butter: You can substitute with melted coconut oil, ghee, or even a light buttery spread of your choice.
Whipped Topping: Don’t have Cool Whip? Use any whipped cream, whipped coconut cream, or skip it altogether for a more minimalist PSL cake.

Get creative with it—this protein pumpkin mug cake is meant to be easy and adaptable for any cozy craving.

**If there is a sub I haven’t mentioned above, it’s because I have not tested it and can’t speak for how well it would work for this recipe.

Equipment and Tools

No fancy equipment required for this pumpkin spice latte mug cake—you’ll be able to whip it up using just a few kitchen basics! Here’s what you’ll need to make this PSL-inspired treat come to life:

Microwave-Safe Ramekin: The perfect vessel for mixing, microwaving, and forming your single-serve pumpkin mug cake. A small bowl works too!
Small Jar or Cup: Used to mix your pumpkin spice latte mixture and get it frothy—ideally with a frother, but a fork works too.
Milk Frother: Optional but highly recommended for making your espresso-pumpkin blend extra smooth and airy.
Measuring Scale: Precision is key, especially when working with protein powder and small-batch bakes.
Measuring Spoons & Cups: Essential for getting all your ratios right and ensuring a fluffy final result.
Toothpick or Skewer: For testing doneness and poking holes to soak in the rest of that delicious pumpkin spice mixture.
Spatula or Spoon: To mix your batter and smooth the top before microwaving.

That’s it—no oven needed, no cleanup hassle, and you’ll have the coziest little protein pumpkin mug cake in no time.

How to Make Your Pumpkin Spice Latte Mug Cake

This pumpkin spice latte mug cake is as easy as it gets—minimal prep, no fancy techniques, and just a handful of ingredients for the perfect fall-flavored treat. In just under 5 minutes, you’ll have a fluffy PSL cake ready to enjoy.

Pumpkin Spice Mixture

Start by whisking together the milk, brewed espresso, pumpkin purée, cinnamon, and nutmeg in a small jar or bowl. A milk frother works great here to get it nice and frothy. Once combined, set the mixture aside for later.

Pumpkin Cake

In a microwave-safe ramekin, mix together the all-purpose flour, vanilla protein powder, baking powder, and salt until well combined.

Then add in the pumpkin purée, melted butter, and about two-thirds of your prepared pumpkin spice mixture. Stir until you get a thick, smooth batter with no dry flour pockets. Level out the top with a spoon.

Microwave for 75 to 90 seconds, depending on your microwave’s strength. It should be set but still slightly soft in the center—use a toothpick to test. A few moist crumbs are okay! Let it cool in the ramekin for 5–10 minutes before flipping it onto a plate.

Once released, poke holes into the center of the cake using a chopstick or skewer. Pour the remaining one-third of the pumpkin spice mixture over the top and let it soak in.

Toppings

Finish with a dollop of reduced-fat whipped topping and a pinch of flaky sea salt. That final touch turns this into the ultimate PSL mug cake moment.

Whether it’s breakfast, dessert, or a mid-day treat, this pumpkin microwavable cake will warm you up from the inside out.

Tips and Tricks

Here are some handy tips and tricks to make your pumpkin spice latte mug cake turn out just right—cozy, spiced, and not soggy:

Microwave Timing Matters: Because microwaves vary a lot, start with about 75 seconds and check doneness with a toothpick. If it’s still too wet, add 5‑10 more seconds. Overcooking will dry it out.
Mix Until Just Combined: When making the pumpkin cake batter, make sure there are no dry flour pockets but don’t overmix. Overmixing can toughen the texture.
Use Fresh Spices: For pumpkin spice mixture (cinnamon, nutmeg etc.), fresh ground or recently opened spices bring way more aroma. Your PSL‑cake will taste way more fall‑y.
Let It Rest Before Inviting Toppings: After microwaving, let the cake cool 5‑10 minutes, particularly for a protein pumpkin mug cake. This resting time helps it firm up so it holds its shape when you invert or add toppings.
Soak‑In Flavor: When you poke holes and pour in the remaining pumpkin spice latte mixture, make sure the cake is warm enough to absorb it, but not so hot that the whipped topping melts instantly.

Storage Instructions

Here are some storage instructions to ensure your pumpkin spice latte mug cake stays fresh and enjoyable, especially if you make extra or want leftovers:

Short‑Term Storage: If you’ve made a PSL cake and didn’t finish, loosely cover or place it in an airtight container and refrigerate. It’s best eaten within 1‑2 days.
Separate Components if Possible: If you plan on topping with whipped cream or adding the final drizzle later, store those separately so they stay stable and don’t lose texture.
Avoid Freezing: Because of the pumpkin purée, protein powder, and the soaked parts, freezing tends to mess with texture—moisture separates and the cake can become grainy or soggy when thawed.
Reheating Tips: To reheat, pop it in the microwave for 10‑15 seconds just to warm up—not too much. You can add a splash of milk on top before heating to freshen it.

By following these, your pumpkin microwavable cake will continue to taste great—soft, spiced, and comforting—even after storing.

More Fall Dessert Recipes

I’m always looking for fall desserts that hit the same cozy, pumpkin‑spice vibe as a PSL mug cake. Here are some that I love from my site:

FAQs

Here are some frequently asked questions about the pumpkin spice latte mug cake, with detailed answers to help you nail it every time:

Can I use a different kind of flour or protein powder?

Yes! You can swap out all‑purpose flour for a gluten‑free blend or even oat flour if that’s what you have. For the protein powder, vanilla works great, but other mild flavors might work too (just expect slight changes in texture or sweetness). Just make sure the protein powder isn’t overly gritty, or it may affect how smooth your PSL cake turns out.
What if I don’t have espresso—can I substitute?

Absolutely. Strong brewed coffee will do the trick in a pinch, or a small amount of instant espresso powder dissolved in hot water. The goal is to capture that coffee kick without adding a lot of liquid that unbalances the batter.
My cake came out too wet in the center—what did I do wrong?

If it’s too wet, likely you either didn’t microwave it long enough, the batter was too thick or too wet, or your microwave is weaker (lower wattage). Try increasing microwave time by 5‑10 seconds next time, or reduce liquid slightly. Also, letting it rest after cooking helps residual heat finish the job.
How do I get the best flavor soak‑in when pouring the remaining pumpkin spice mixture?

Make sure the cake is warm (but not scorching) when you pour in the remaining mixture. Use a chopstick or toothpick to poke holes so it seeps in deeply. If needed, pour slowly and let it sit a minute or two so the liquid has time to absorb before you add the whipped cream topping.

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