Name: Pumpkin Dump Cake with Sweetened Condensed Milk
Prep time: 15 min
Cook time: 50 min
Total time: 65 min
Ingredients: 15 ounces pure pumpkin puree; 14 ounces sweetened condensed milk; 3 large eggs; 1/2 cup granulated sugar; 1/4 cup light brown sugar, packed; 2 teaspoons pumpkin pie spice; 1 teaspoon pure vanilla extract; 1/2 teaspoon fine sea salt; 1 box yellow cake mix (about 15.25 ounces); 1 teaspoon ground cinnamon; 3/4 cup unsalted butter, melted and slightly cooled; 3/4 cup chopped pecans or walnuts; 1/2 cup toffee bits or mini chocolate chips; flaky sea salt, for sprinkling on top after baking

Pumpkin Dump Cake with Sweetened Condensed Milk tastes like pumpkin pie and buttery crumb cake had a fall-themed baby, and it works perfectly for busy bakers who want a cozy dessert in about an hour. It suits holiday gatherings, potlucks, or weeknight “I need dessert now” moods. I baked a version of this last Thanksgiving and watched my family quietly abandon the pie for second helpings of this cake.

Why Pumpkin Dump Cake with Sweetened Condensed Milk Is Worth It

This pumpkin dump cake delivers big flavor with minimal effort and zero mixer drama. You stir the pumpkin base in one bowl, layer everything in the pan, and the oven does the rest. The sweetened condensed milk adds caramel richness and an ultra-moist, custardy texture under the crunchy cake topping.

The recipe uses pantry staples, so you can pull it together with canned pumpkin, boxed cake mix, and a can of sweetened condensed milk. It tastes like you spent hours in the kitchen, but you actually spent more time deciding which spoon to lick.

“This Pumpkin Dump Cake with Sweetened Condensed Milk tastes like a bakery pumpkin pie and a buttery cobbler in one pan, and everyone asked for the recipe before dessert even ended. ★★★★★”

Ingredients You Need

Pumpkin layer

1 can (15 ounces) pure pumpkin puree
- Use 100% pumpkin, not pumpkin pie filling. Libby’s or store brand both work well.
1 can (14 ounces) sweetened condensed milk
- Any brand works; I often use Eagle Brand or the store brand.
3 large eggs
1/2 cup granulated sugar
1/4 cup light brown sugar, packed
2 teaspoons pumpkin pie spice
- Or use 1 1/2 teaspoons cinnamon + 1/4 teaspoon nutmeg + 1/4 teaspoon ginger + pinch of cloves.
1 teaspoon pure vanilla extract
1/2 teaspoon fine sea salt

Cake topping

1 box (about 15.25 ounces) yellow cake mix
- Spice cake mix also tastes great and adds extra warm flavor.
1 teaspoon ground cinnamon (optional, but tasty)
3/4 cup unsalted butter, melted and slightly cooled
- Use real butter, not margarine, for best flavor.

Optional add-ons

3/4 cup chopped pecans or walnuts
1/2 cup toffee bits or mini chocolate chips
Flaky sea salt for sprinkling on top after baking

Pantry shortcuts and swaps

Use canned pumpkin and boxed cake mix to keep this dessert weeknight-friendly.
Swap yellow cake mix with spice cake mix when you want a stronger spice profile.
Use evaporated milk plus 3/4 cup sugar if you lack sweetened condensed milk, though the texture turns slightly less fudgy.

Equipment list

9×13-inch baking pan (glass or metal)
Large mixing bowl
Whisk and rubber spatula
Measuring cups and spoons
Small bowl or measuring cup for melting butter
Cooling rack
Offset spatula or large spoon for serving

Quick Tips & substitutions

Use room-temperature eggs so they mix smoothly into the pumpkin and sweetened condensed milk.
Grease the pan generously; this dessert loves to cling to the corners.
Stir the pumpkin layer until smooth, but avoid over-mixing the cake mix; you want a crumbly, sandy texture on top.
Drizzle the melted butter evenly across the dry cake mix so no large dry patches stay on top.
Swap yellow cake mix with spice, butter pecan, or white cake mix based on what you have.
Use coconut milk caramel or oat-based condensed milk for a dairy-light version.
Add chopped pecans or walnuts on top of the cake mix before the butter for extra crunch.
Chill the baked pumpkin dump cake for a firmer, pumpkin-pie-like slice, or serve warm for a scoopable, cobbler-style dessert.

How to Make Pumpkin Dump Cake with Sweetened Condensed Milk

Step 1: Mix the pumpkin base

Preheat the oven to 350°F and grease a 9×13-inch pan with butter or nonstick spray. In a large bowl, whisk the pumpkin puree, sweetened condensed milk, eggs, granulated sugar, brown sugar, pumpkin pie spice, vanilla, and salt until the mixture looks smooth and glossy. Pour the pumpkin mixture into the prepared pan and spread it into an even layer.

Step 2: Add the cake mix layer

Open the box of cake mix and pour it into a separate bowl. Add the cinnamon and stir to combine so the spice distributes evenly. Sprinkle the dry cake mix evenly over the pumpkin layer, covering the surface from corner to corner. Aim for a thin, even blanket of mix without big mounds.

Step 3: Add butter and optional toppings

Slowly drizzle the melted butter over the dry cake mix. Move your hand in a zigzag pattern so the butter hits as much of the surface as possible. Sprinkle nuts, toffee bits, or chocolate chips over the top if you use them. Gently tap the pan on the counter once or twice to help everything settle.

Step 4: Bake to golden perfection

Place the pan on the center rack and bake 45–55 minutes. The edges should look deep golden and set, and the center should jiggle slightly but not slosh. If the top browns too quickly, tent the pan loosely with foil during the last 10–15 minutes.

Step 5: Cool and serve

Set the pan on a cooling rack and let the pumpkin dump cake rest at least 20–30 minutes. The custardy pumpkin layer thickens as it cools, and the topping turns extra crisp. Serve warm for a scoopable dessert or chill for a few hours if you want neat slices. Add whipped cream or ice cream right before serving.

Recipe Variations

Gluten-free: Use a gluten-free yellow or spice cake mix and confirm your pumpkin pie spice and other ingredients list gluten-free.
Dairy-light: Use dairy-free sweetened condensed coconut milk and vegan butter sticks.
Lower sugar: Use a no-sugar-added cake mix and reduce the granulated sugar in the pumpkin layer to 1/4 cup.
Nutty crunch: Add 1 cup chopped pecans, walnuts, or a mix across the top before baking.
Chocolate twist: Use chocolate cake mix and add 1/2 cup mini chocolate chips over the pumpkin layer.
Extra spice: Add an extra 1/2 teaspoon cinnamon and a pinch of cardamom to the pumpkin mixture.

Ways to Serve Pumpkin Dump Cake with Sweetened Condensed Milk

Spoon warm pumpkin dump cake into bowls and top with vanilla ice cream.
Serve chilled squares with a big cloud of whipped cream and a dusting of cinnamon.
Add a scoop alongside hot coffee, chai, or spiced herbal tea.
Pack cooled slices in lunchboxes as a special fall dessert.
Serve small squares on a dessert board with apple slices and caramel dip.

Storage Success

Let the pumpkin dump cake cool to room temperature, then cover the pan tightly with foil or transfer slices to airtight containers. Store in the refrigerator for up to 4–5 days; the flavors deepen and the texture turns even more custardy. Reheat individual portions in the microwave for 20–30 seconds if you want that warm, just-baked feel. Freeze cooled slices for up to 2 months, then thaw overnight in the fridge and warm gently before serving.