Learn how to make this easy keto pumpkin mug cake in just 2 minutes. It’s a quick, low-carb treat that’s moist, tender, and full of warming pumpkin spice.

Keto Pumpkin Mug Cake

If you want an easy, fast dessert this pumpkin season, this keto pumpkin mug cake is perfect. It takes just a few simple ingredients and only minutes to prepare—ideal for a snack, a small dessert after dinner, or a cozy breakfast with coffee.

I refined this recipe through several tests to balance texture and flavor. The result is a mug cake that’s tender and moist, not overly sweet, and very low in carbs. It keeps well in the fridge and stays soft even after 24 hours.

What is keto cake in a mug?

A keto cake in a mug is a single-serving cake made with low-carb ingredients, cooked quickly in a mug using a microwave. It’s a convenient way to control portions. This recipe makes a fairly large serving, so I often split the batter into two ramekins and save one for later. If you prefer not to use a microwave, the cake can be baked in the oven instead.

Ingredients

The ingredient list is straightforward. A mix of almond and coconut flours with a little fat gives the best texture for a keto mug cake.

• Melted butter
• Oil (avocado or light olive oil)
• Almond flour (blanched)
• Coconut flour
• Granulated keto sweetener (erythritol, monk fruit blend, allulose, or xylitol if safe for pets)
• Egg
• Pumpkin puree (pure pumpkin, not pumpkin pie filling)
• Pumpkin pie spice
• Vanilla extract
• Baking powder
• Pinch of salt

Using both butter and oil provides a subtle buttery flavor while keeping the crumb tender. If you prefer, you can skip the butter and increase the oil by one tablespoon.

Blanched almond flour behaves most like regular flour in keto baking, while coconut flour soaks up moisture. Together they deliver a light, not dense mug cake.

Choose a low-carb granulated sweetener you like. Note that allulose is less sweet, so you may need an extra tablespoon if using it. Keep xylitol away from pets, as it’s toxic to them.

For the pumpkin puree, check the label to ensure it contains only pumpkin. Avoid canned pumpkin pie filling, which contains added sugar and spices.

Make sure your baking powder is fresh for the best rise; I replace mine every six months.

How to make low carb pumpkin mug cake

Add all ingredients to a mixing bowl or directly into a large microwave-safe mug. If using a mug, you can melt the butter in it first and then add the remaining ingredients.

Whisk or stir well until the batter is smooth and lump-free.

Divide the batter into two greased ramekins or keep it in one large mug.

Microwave each ramekin for 90 seconds. If you make a single large mug cake, microwave about 1 minute 50 seconds. The top should look set and slightly springy. Let the cake cool for a minute or two before serving. Alternatively, bake in a preheated oven at 350°F for about 10 minutes.

Top with whipped cream and crushed pecans for a finishing touch.

How to store

Store covered in the refrigerator for 3–4 days. Reheat briefly in the microwave before eating. You can freeze the cake for up to 3 months in an airtight container or zip-top bag; thaw overnight in the fridge.

How to serve

This cake is delicious on its own, but whipped cream and crushed pecans elevate it to dessert status. You can also fold chopped pecans or almonds into the batter for extra texture. It makes a satisfying single-serving breakfast with coffee, a quick snack, or a small indulgence after dinner.

More pumpkin recipes you’ll love

• Starbucks Copycat Keto Pumpkin Cold Brew
• Homemade Pumpkin Pie Spice
• Gluten Free Pumpkin Layer Cake with Cream Cheese Frosting
• Pumpkin Milk Toffee
• Pumpkin Curry

Recipe