Two-Ingredient Pumpkin Spice Cake is a quick, beginner-friendly dessert with a moist crumb, warm seasonal flavor, and almost no preparation. Mix the batter by hand, bake it in one pan, and add creamy frosting once it has cooled.
This simple cake is ideal when you need a dependable fall dessert without measuring flour, sugar, oil, or spices. Pure pumpkin purée adds moisture and richness, while the prepared spice cake mix provides structure, sweetness, and plenty of cinnamon-forward flavor.
The batter comes together in one bowl with a spoon or spatula, so there is no mixer to clean afterward. It is a practical choice for busy weekends, casual gatherings, school events, or last-minute holiday baking.
You can serve the cake plain, dust it lightly with powdered sugar, or finish it with cream cheese frosting. However you decorate it, allow the cake to cool completely first so the topping stays thick and neatly spreadable.
Ingredients
Spice cake mix: A 15-ounce boxed mix supplies the flour, sweetener, leavening, and warm spices needed to form the cake’s base.
Pure pumpkin purée: One 15-ounce can provides moisture, mild pumpkin flavor, and a tender texture without requiring eggs, butter, or oil.
Cream cheese frosting: An optional topping that adds a rich, tangy contrast to the warmly spiced cake. Use enough to create a thin layer or a thicker bakery-style finish.
The cake itself requires only the spice cake mix and pumpkin purée. Be sure to purchase plain pumpkin rather than pumpkin pie filling, which already contains added sugar, spices, and other ingredients that would change the batter.
Cooking Steps
STEP 1: Heat your oven to 350°F and prepare a 9 × 13-inch baking pan. Line the pan with parchment paper, leaving enough overhang along the sides to make lifting the cooled cake easier.
STEP 2: Place the spice cake mix in a large mixing bowl. Spoon the pumpkin purée over the dry mix, scraping the can well so you use the full amount.
STEP 3: Stir the two ingredients together with a sturdy wooden spoon or flexible spatula. The mixture will initially appear thick and slightly dry, but it will become smoother as the pumpkin is fully incorporated. Continue mixing until no visible pockets of dry cake mix remain.
STEP 4: Spoon the thick batter into the prepared baking pan. Use the back of your spoon or an offset spatula to spread it into the corners and create an even surface. An evenly distributed batter helps the center and edges finish baking at approximately the same time.
STEP 5: Place the pan on the center oven rack and bake for 20–25 minutes. Begin checking near the shorter baking time because ovens and baking pans can vary. The cake is ready when the center looks set and a toothpick inserted into the middle comes out clean or with a few moist crumbs.
STEP 6: Remove the cake from the oven and leave it in the pan for about 5 minutes. This brief resting period allows the crumb to settle before the cake is moved.
STEP 7: Lift the cake from the pan using the parchment overhang and transfer it to a wire rack. Let it cool completely. Once cool, spread cream cheese frosting evenly over the surface, then cut the cake into squares and serve.
Serving Ideas for Pumpkin Spice Cake
This cake is flavorful enough to serve without a topping, particularly when you want a less rich dessert. A light dusting of powdered sugar gives it a simple finish while allowing the pumpkin and spice flavors to remain prominent.
For a more decadent presentation, spread the cooled cake with cream cheese frosting. The slight tanginess of the frosting balances the sweetness of the cake and complements the cinnamon, nutmeg, and other warm spices typically found in the boxed mix.
You can also serve individual squares with hot coffee, black tea, or a cold glass of milk. For a fall gathering, arrange the slices on a large platter and add the frosting shortly before serving so the surface remains neat and fresh.
Why is my batter so thick?
A thick batter is normal for this cake because it does not contain the eggs, oil, or water usually added to a boxed cake mix. The pumpkin purée supplies the necessary moisture, but the mixture will remain considerably thicker than traditional cake batter.
Keep stirring and scraping the bottom of the bowl until all the dry mix has disappeared. Avoid adding extra liquid, as this can affect the cake’s structure and make the center take longer to bake.
Can I use pumpkin pie filling?
Pumpkin pie filling is not recommended. It contains sweeteners, spices, and sometimes additional ingredients that are not present in plain pumpkin purée. Using it could make the cake overly sweet or alter the consistency of the batter.
Check the ingredient label carefully and choose a can labeled pure pumpkin or pumpkin purée.
Does this cake need eggs or oil?
No eggs, oil, butter, or water are needed for the basic cake. The canned pumpkin replaces the moisture that would normally come from several separate ingredients.
The result is slightly denser than a standard boxed cake, but it should still be soft, moist, and easy to slice once completely cooled.
Can I prepare it ahead of time?
Yes. Bake the cake one day before you plan to serve it and let it cool completely. Keep an unfrosted cake tightly covered, or refrigerate it after adding cream cheese frosting.
For the neatest appearance, you can bake the cake in advance and apply the frosting several hours before serving.
How do I know when the center is done?
The center should look set rather than shiny or wet, and it should spring back slightly when touched gently. Insert a toothpick into the thickest part of the cake; it should come out clean or with only a few soft crumbs attached.
Avoid judging the cake only by its darker color because the pumpkin and spices naturally produce a deep golden-brown crumb.
Helpful Tips
- Mix the batter thoroughly, paying special attention to the bottom and corners of the bowl where dry cake mix can hide.
- Spread the thick batter into an even layer before baking so you do not end up with an underbaked center and dry edges.
- Wait until the cake is fully cool before frosting it. Even a small amount of residual heat can soften cream cheese frosting and cause it to slide.
How to Store and Reheat
Store an unfrosted cake in a tightly covered container at room temperature for up to two days. For longer storage, refrigerate it for up to four days and bring individual portions closer to room temperature before serving.
A cake topped with cream cheese frosting should be stored in the refrigerator. Cover the pan or place the slices in an airtight container to prevent the cake from drying out or absorbing other refrigerator odors. Enjoy refrigerated leftovers within four days.
To freeze the unfrosted cake, wrap the whole cake or individual squares securely in plastic wrap and place them in a freezer-safe container. Freeze for up to three months. Thaw the cake overnight in the refrigerator, then bring it to room temperature and add frosting before serving.
Frosted slices can also be frozen, although the texture and appearance of the frosting may change slightly after thawing. Freeze the pieces uncovered until the frosting is firm, then wrap and store them in an airtight container.
This cake does not need reheating, but an unfrosted slice can be warmed in the microwave for approximately 8–10 seconds if you prefer it slightly warm. Avoid heating a frosted slice because the cream cheese topping may melt.
Two-Ingredient Pumpkin Spice Cake
Ingredients
For the Cake
- One 15-ounce box spice cake mix preferably Duncan Hines
- One 15-ounce can pure pumpkin purée not pumpkin pie filling
For the Optional Topping
- 1 –2 cups cream cheese frosting either prepared at home or purchased ready-made
Instructions
- Heat the oven to 350°F (175°C). Line a 9 × 13-inch baking pan with parchment paper, then place the prepared pan aside.
- Empty the pure pumpkin purée and spice cake mix into a large mixing bowl.
- Stir the ingredients together with a wooden spoon or flexible spatula until the batter is smooth, evenly blended, and free of dry pockets. Mixing by hand helps prevent the batter from being overworked and supports a tender texture.
- Transfer the pumpkin spice batter to the parchment-lined pan. Smooth the surface into an even layer.
- Position the pan in the center of the preheated oven and bake for 20–25 minutes. The cake is finished when a toothpick inserted into the middle comes out clean.
- Remove the pan from the oven and allow the cake to rest inside it for 5 minutes.
- Using the parchment paper as handles, carefully lift the cake from the pan and place it on a wire rack. Let it cool completely before applying frosting.
- Once fully cooled, spread 1–2 cups of cream cheese frosting evenly across the top. Cut the cake into portions and serve.
Notes
The frosting should not be applied until the cake has cooled completely, as residual warmth may cause it to soften or melt.
Powdered sugar or another preferred icing may be used in place of cream cheese frosting.
The unfrosted cake contains only the two primary ingredients: spice cake mix and pure pumpkin.