A close-up of a slice of Pumpkin Oatmeal Dump Cake topped with whipped cream and pecans.

Amazing Pumpkin Oatmeal Dump Cake: 1 Easy Recipe

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Written by Sarah Peterson

October 2, 2025

Oh, fall baking! It just makes my heart sing, doesn’t it? There’s something so incredibly cozy about the crisp air, the changing leaves, and, of course, the warm, spiced aromas filling the kitchen. If you’re like me and love that classic fall feeling but don’t always have hours to spend in the kitchen, then you are going to *adore* this pumpkin oatmeal dump cake. Seriously, it’s practically magic! You just literally dump everything into a pan and bake. My own kitchen has seen its fair share of frantic weeknights, and having a recipe like this up my sleeve has saved me more times than I can count. It’s the perfect way to get that delicious taste of pumpkin and spice with hardly any fuss.

Why You’ll Love This Pumpkin Oatmeal Dump Cake

  • So incredibly easy! Seriously, dump and bake is the name of the game here. No fancy mixers or complicated steps, perfect for when you’re short on time.
  • Pure fall flavor. Hello, pumpkin, cinnamon, and oats! It tastes like autumn in every single bite.
  • Crowd-pleaser guaranteed. This is the kind of dessert that always gets rave reviews at potlucks, holidays, or just a cozy family night.
  • Pantry staple friendly. Most of these ingredients are probably already in your pantry, making it a go-to for an impromptu baking session.

Gather Your Ingredients for Pumpkin Oatmeal Dump Cake

Alright, time to pull out your goodies! This dump cake is seriously a lifesaver because you probably have most of this already. Here’s what you’ll need:

  • One box (that’s 15.25 oz, usually!) of yellow cake mix. Trust me, the yellow cake mix is perfect here!
  • One 15 oz can of pure pumpkin puree – make sure it’s the real deal, not pumpkin pie filling (we’re adding our own spices!).
  • Half a cup (that’s one stick, or 4 oz) of unsalted butter, and it needs to be melted.
  • Half a cup of rolled oats. You want the old-fashioned kind for that perfect texture; the instant ones get too mushy.
  • A little splash of spices: 1 teaspoon of pumpkin pie spice and a good half teaspoon of cinnamon.
  • And just a pinch of salt, about 1/4 teaspoon.

Oh, and if you’re feeling fancy (and I often am!), you can totally toss in about half a cup of chopped pecans. They add the loveliest crunch!

Simple Steps to Make Your Pumpkin Oatmeal Dump Cake

Okay, deep breaths! This is where the magic *really* happens, and I promise, it’s ridiculously easy. We’re talking about a dessert that looks and tastes like you slaved over it, but it practically makes itself. Get ready to watch your oven do all the hard work! This is one of those recipes that, like my other pumpkin dump cake recipes, is perfect for when you want something special without all the fuss.

Preparing Your Baking Dish and Oven

First things first, let’s get that oven preheating. We’re aiming for a cozy 350°F (175°C). While it’s warming up, grab a 9×13 inch baking dish. You’ll want to give it a good grease-up – a little butter or cooking spray does the trick so our delicious cake doesn’t stick. This step is super important; don’t skip it!

Mixing the Pumpkin Base

Now for the heart of our cake! In a big ol’ bowl, plop in your pumpkin puree, your nicely melted butter (make SURE it’s melted, otherwise, it’ll be lumpy!), your pumpkin pie spice, cinnamon, and that little pinch of salt. Give it all a good stir until everything is happy and blended together. This is what gives our dump cake that wonderful, moist, pumpkin-y flavor. If you’re looking for other tasty pumpkin treats, check out this pumpkin dump cake too!

Combining Wet and Dry Ingredients for the Dump Cake

This is the “dump” part! Now, add that box of yellow cake mix right into the pumpkin mixture, along with your rolled oats. Stir it all together until it’s *just* combined. I cannot stress this enough: DO NOT overmix! We want it to look a bit shaggy, maybe still a few streaks of dry cake mix here and there. Overmixing is the enemy of a tender dump cake, and trust me, we want tender!

Baking Your Pumpkin Oatmeal Dump Cake to Golden Perfection

Gently spread that wonderful, thick batter evenly into your prepared baking dish. If you decided to go with the pecans (smart move!), now’s the time to sprinkle them all over the top. Pop it into your preheated oven and let it bake for about 30 to 35 minutes. You’re looking for that beautiful golden-brown color on top, and the best test? Stick a toothpick right into the center. If it comes out clean, your pumpkin oatmeal dump cake is officially ready!

Tips for the Best Pumpkin Oatmeal Dump Cake

Listen, even though this dump cake is super easy, there are a few little tricks I’ve picked up that make it *extra* amazing. You want that perfect gooey center and that lovely crust on top, right? First off, if you’re not a pecan fan (or just don’t have any!), walnuts are a fantastic substitute. They’ll give you that same lovely crunch. And speaking of enhancements, sometimes I like to add just a tablespoon of brown sugar right into the dry ingredients. It gives the cake a little something extra, a deeper, richer flavor that just screams cozy fall.

For an even more incredible flavor boost, especially if you’re going all-in on the pumpkin theme, you could even try adding a drizzle of caramel sauce over the top after it bakes. Oh. My. Goodness. So good! If you’re a big pumpkin spice person, you might even want to whip up your own pumpkin spice blend. And hey, for the truly adventurous bakers out there, if you want to make this a bit decadently chewy, sometimes I’ll whip up a batch of chewy pumpkin cookies and crumble some over the top before baking. It’s a bit extra, but oh-so-worth-it!

Serving Suggestions for Your Cozy Fall Dessert

This pumpkin oatmeal dump cake is pretty darn perfect on its own, but let’s be honest, a little something extra can take it from great to absolutely heavenly. My favorite way to serve it is warm, right out of the oven, with a big dollop of fluffy whipped cream or a scoop of creamy vanilla ice cream. The contrast between the warm, spiced cake and the cool, sweet topping is just divine! For an extra burst of flavor, a little drizzle of caramel sauce is always a good idea, or even just a little extra sprinkle of cinnamon over the top.

Frequently Asked Questions About Pumpkin Dump Cake

Can I make this pumpkin oatmeal dump cake gluten-free?

You sure can! To adapt this recipe for a gluten-free version, just swap out the regular yellow cake mix for a good quality gluten-free yellow cake mix. Most brands work wonderfully, just be sure to follow any specific instructions on the package if they differ from standard mixing. You might find the texture is a little different, but the flavor will still be amazing!

What kind of pumpkin puree should I use?

When you grab your pumpkin puree for this dump cake, make sure you’re getting 100% pure pumpkin puree, not pumpkin pie filling. The pure stuff is just plain pumpkin, no added sugars or spices. We want to control that flavor ourselves with the pumpkin pie spice and cinnamon, ensuring it’s perfectly spiced and not too sweet!

How long does this pumpkin dump cake last?

This cozy little dessert is best enjoyed fresh, but it does keep quite well! Once it’s cooled down, you can store any leftovers in an airtight container at room temperature for about 2-3 days. If it gets really warm where you are, popping it in the fridge is fine too, though it can make the topping a bit softer. Just gently reheat a slice in the microwave or oven if you like it warm!

Can I use instant oats instead of rolled oats?

I really recommend sticking with rolled oats (also called old-fashioned oats) for this pumpkin oatmeal dessert. Instant oats tend to get a bit too mushy when baked, and we want to have some lovely texture from the oats in our dump cake topping. Rolled oats hold their shape a bit better and give you that satisfying chewiness!

Estimated Nutritional Information

Just a little note for you all: these numbers are an estimate, okay? Kind of like guessing how many sprinkles are in a jar! Depending on the brands you use for your cake mix and pumpkin, and, of course, if you add those yummy pecans or a dollop of ice cream, the values can wiggle around a bit. But generally, you’re looking at around 350 calories, about 15g of fat, 50g of carbs, and roughly 3g of fiber per slice. Happy baking!

Share Your Pumpkin Oatmeal Dump Cake Creation!

Okay, now that you’ve got this amazing pumpkin oatmeal dump cake ready to go, I’d absolutely LOVE to hear about it! Did you make it? How did it turn out? Please, leave a comment below and tell me all about your experience. And if you snapped a picture (you know you did!), tag me on social media – I can’t wait to see your cozy creation. Your feedback really helps others, and honestly, it just makes my day! If you have any questions that I missed, feel free to pop those in the contact form too. Let’s connect!

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Pumpkin Oatmeal Dump Cake

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A simple and cozy fall dessert made with pantry staples, this pumpkin oatmeal dump cake is a perfect addition to your Thanksgiving or fall baking plans.

  • Author: Sarah Peterson
  • Prep Time: 10 min
  • Cook Time: 35 min
  • Total Time: 45 min
  • Yield: 12 servings 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 1 box (15.25 oz) yellow cake mix
  • 1 can (15 oz) pumpkin puree
  • 1/2 cup (1 stick) unsalted butter, melted
  • 1/2 cup rolled oats
  • 1/2 cup chopped pecans (optional)
  • 1 teaspoon pumpkin pie spice
  • 1/2 teaspoon cinnamon
  • 1/4 teaspoon salt
  • Whipped cream or vanilla ice cream, for serving

Instructions

  1. Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish.
  2. In a large bowl, combine the pumpkin puree, melted butter, pumpkin pie spice, cinnamon, and salt. Mix well.
  3. Add the yellow cake mix and rolled oats to the pumpkin mixture. Stir until just combined. Do not overmix.
  4. Spread the batter evenly into the prepared baking dish.
  5. If using, sprinkle the chopped pecans over the top.
  6. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean and the top is golden brown.
  7. Let cool slightly before serving. Serve warm with whipped cream or vanilla ice cream.

Notes

  • For an extra layer of flavor, you can add a tablespoon of brown sugar to the dry ingredients.
  • If you don’t have pecans, walnuts are a good substitute.
  • This cake is delicious served with a drizzle of caramel sauce.

Nutrition

  • Serving Size: 1 slice
  • Calories: 350
  • Sugar: 35g
  • Sodium: 250mg
  • Fat: 15g
  • Saturated Fat: 7g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 50g
  • Fiber: 3g
  • Protein: 4g
  • Cholesterol: 30mg

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Sarah Peterson is the founder, recipe developer, and voice behind Cut Cook Taste. Growing up in a Midwestern family where the kitchen was the heart of the home, Sarah learned that recipes are stories passed down through generations. After years as a passionate home cook, she launched Cut Cook Taste to share her love for classic American cuisine and to empower others in the kitchen. Her expertise comes from a lifetime of hands-on experience, focusing on creating reliable, family-friendly recipes with fresh, accessible ingredients. Every recipe on the site is meticulously tested in her own kitchen to ensure it's simple to follow and absolutely delicious.

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