Homemade Cake Mix Pumpkin Bars

Here is my favorite cake mix pumpkin bars recipe, with simple ingredients that come together quickly, and a soft, spiced bar that tastes like fall in every bite.

These pumpkin bars are my go-to dessert when I need something easy but delicious for school events or family gatherings. I always make a double batch because they disappear so fast. Nothing beats a sweet treat that takes less than an hour from start to finish, right?

What Kind of Pumpkin Puree Should I Use?

For these pumpkin bars, you’ll want to grab a can of pure pumpkin puree from the baking aisle – just make sure it’s not pumpkin pie filling, which already has spices and sugar added. Libby’s is probably the most common brand you’ll find, but any pure pumpkin puree will work great. If you’re feeling ambitious, you can absolutely make your own by roasting and pureeing fresh pumpkin, though the canned version is much more convenient and gives consistent results. Just give the can a good stir before measuring since the puree can separate a bit during storage.

Options for Substitutions

These pumpkin bars are pretty forgiving when it comes to swaps, so here’s what you can do:

• Yellow cake mix: You can use white cake mix or even spice cake mix instead. Spice cake will give you extra warm flavors that pair nicely with pumpkin.
• Butter: If you’re out of butter, vegetable oil works great – use about ¾ cup instead of the full cup. You can also try melted coconut oil for a subtle coconut flavor.
• Cream cheese: Make sure your cream cheese is at room temperature for easy mixing. In a pinch, you can use mascarpone cheese, but the flavor will be a bit milder.
• Pumpkin pie spice: Don’t have pumpkin pie spice? Mix together 1 tsp cinnamon, ½ tsp ginger, ¼ tsp nutmeg, and a pinch of cloves to make your own blend.
• Pumpkin puree: Make sure you’re using pure pumpkin puree, not pumpkin pie filling. If you can’t find it, you can use sweet potato puree or butternut squash puree as alternatives.
• Powdered sugar: You can make your own by blending regular granulated sugar in a food processor until it’s powdery, or reduce the amount slightly if you prefer less sweetness.

Watch Out for These Mistakes While Baking

The biggest mistake when making cake mix pumpkin bars is not letting your cream cheese come to room temperature first, which leads to lumpy filling that won’t spread smoothly over your base layer. Make sure to beat that cream cheese until it’s completely smooth before adding the other filling ingredients, and don’t rush this step. Another common error is overbaking – these bars are done when the center is just set but still slightly jiggly, as they’ll continue cooking from residual heat even after you remove them from the oven. For the cleanest cuts and best presentation, let the bars cool completely in the refrigerator for at least 2 hours before slicing, and use a sharp knife wiped clean between cuts.

What to Serve With Pumpkin Bars?

These pumpkin bars are perfect on their own, but they’re even better with a dollop of whipped cream or a scoop of vanilla ice cream on the side. A hot cup of coffee or spiced chai tea makes a great pairing since the warm spices in the bars complement those cozy fall flavors perfectly. If you want to get fancy, try serving them with a drizzle of caramel sauce or a sprinkle of toasted pecans on top. They also make a great addition to any fall dessert spread alongside apple crisp or cinnamon rolls.

Storage Instructions

Store: These pumpkin bars keep really well covered tightly in the fridge for up to a week. The cream cheese layer means they need to stay chilled, but honestly they taste even better after a day or two when all the flavors have time to meld together.

Freeze: You can absolutely freeze these bars for up to 3 months! Cut them into individual portions, wrap each piece in plastic wrap, then store in a freezer bag. This way you can grab just one or two whenever you’re craving something sweet.

Serve: Let frozen bars thaw in the fridge overnight, or at room temperature for about 30 minutes if you’re in a hurry. I actually love eating these straight from the fridge – they have this nice firm texture that’s perfect with a cup of coffee.

Preparation Time	15-20 minutes
Cooking Time	45 minutes
Total Time	60-65 minutes
Level of Difficulty	Easy

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 4200-4600
• Protein: 38-46 g
• Fat: 220-250 g
• Carbohydrates: 530-570 g

Ingredients

For the crust:

• 1/2 cup butter, melted (softened to room temperature before mixing)
• 1 large egg
• 1 box yellow cake mix (I use Duncan Hines)

For the pumpkin topping:

• 1/2 cup butter, melted
• 15 oz canned pumpkin puree (I use Libby’s)
• 2 tsp pumpkin pie spice (freshly ground preferred for more flavor)
• 1 tsp vanilla extract
• 8 oz cream cheese (softened to room temperature, about 70°F)
• 3 large eggs
• 2 cups powdered sugar (sifted to remove lumps for smooth topping)

Step 1: Prepare Pan and Preheat Oven

Heat your oven to 350°F and line a 9×13-inch baking dish with parchment paper, allowing the edges to overhang slightly for easy removal later.

This setup ensures your bars won’t stick and gives you a head start on the baking process while you prepare the batters.

Step 2: Make the Cake Mix Crust Layer

• 1 box yellow cake mix
• 1 large egg
• 1/2 cup butter, melted

In a medium bowl, combine the box of yellow cake mix, 1 large egg, and 1/2 cup melted butter, stirring until a thick, crumbly dough forms.

Press this mixture firmly and evenly into the bottom of your prepared baking dish, creating an even layer that will serve as the crust.

I find that lightly moistening your fingers with water helps you press the dough without it sticking too much.

Step 3: Prepare the Pumpkin Filling Base

• 8 oz cream cheese, softened
• 1 tsp vanilla extract
• 2 tsp pumpkin pie spice

In a separate large mixing bowl, beat the softened cream cheese, vanilla extract, and pumpkin pie spice together until smooth and well combined, about 1-2 minutes.

This creates a flavorful base that will distribute the pumpkin spice evenly throughout the filling.

Step 4: Complete the Pumpkin Filling

• pumpkin cream cheese mixture from Step 3
• 15 oz canned pumpkin puree
• 3 large eggs
• 1/2 cup butter, melted
• 2 cups powdered sugar, sifted

Add the canned pumpkin puree, 3 large eggs, and 1/2 cup melted butter to the cream cheese mixture from Step 3, mixing until fully incorporated.

Then sift in the powdered sugar and beat until smooth and creamy, ensuring no lumps remain—sifted powdered sugar helps achieve that silky topping texture.

I like to scrape down the sides of the bowl halfway through mixing to make sure everything is evenly combined.

Step 5: Assemble and Bake

• cake mix crust from Step 2
• pumpkin filling from Step 4

Pour the pumpkin filling mixture from Step 4 over the pressed cake mix crust in your baking dish, spreading it evenly to the edges.

Bake in your preheated 350°F oven for 45 minutes, until the filling is set but still slightly jiggly in the very center—it will continue to set as it cools.

Step 6: Cool and Chill

Remove the baking dish from the oven and allow the bars to cool completely at room temperature, about 1-2 hours.

Once cooled, refrigerate for at least 1 hour before cutting and serving.

Chilling helps the bars set properly and makes them easier to cut into clean pieces.