Pecan Pie Dump Cake

If pecan pie feels like a pastry project and dump cake feels like a potluck joke, this pecan pie dump cake is the honest hybrid: a gooey brown-sugar pecan layer, dry yellow cake mix, melted butter over the top. Don’t stir. 350°F until it’s bubbling and the top is golden. It eats like pecan pie filling with a buttery cake crust, and you do not make a pie dough.

Why You’ll Love This Dump Cake 🥧

No crust to roll. The cake mix + butter becomes the topping.

It really is dump-and-bake once the filling is whisked.

Feeds a 9×13 pan of people without babysitting a filling on the stove.

Ingredients You’ll Need 🛒

Pecan filling

• 2 cups chopped pecans plus ½ cup pecan halves for the top
• 1 cup packed light or dark brown sugar
• 1 cup light or dark corn syrup (this is the pecan-pie goo — ½ cup is not enough filling for a 9×13)
• ½ cup (113 g) unsalted butter, melted, for the filling
• 3 large eggs
• 2 teaspoons vanilla extract
• ½ teaspoon fine salt
• 1 teaspoon cinnamon (optional but it tastes more like holiday pie)

Cake layer

• 1 box (13.25–15.25 oz) yellow cake mix, dry — do not prepare the mix
• ¾ cup (170 g) unsalted butter, melted, to drizzle on top

Makes about 12 servings in a 9×13-inch pan.

Cooking Tools & Equipment 🛠️

9×13-inch baking dish, metal or ceramic, well greased. Glass runs a little cooler; add 5 minutes if the center is still wet.

Two bowls: one for the filling, one to melt butter (or melt it in a saucepan).

Whisk for the eggs and syrup so the filling isn’t streaky.

Oven at 350°F. A rimmed sheet under the dish is smart — this filling can bubble over if your pan is shallow.

That’s it. No mixer, no pastry blender, no candy thermometer. The “don’t stir the cake mix” rule is the technique.

How to Make Pecan Pie Dump Cake 👩‍🍳

Heat and grease

350°F. Grease the 9×13 like you mean it, corners included. This filling sticks when it cools.

Whisk the pecan pie layer

Brown sugar, corn syrup, ½ cup melted butter, eggs, vanilla, salt, cinnamon. Whisk until it looks even and a little glossy. Stir in the chopped pecans. Pour into the pan and spread so the pecans aren’t all in one corner.

Cake mix, then butter, then pecan halves

Sprinkle the dry cake mix evenly over the filling. Break up any lumps with your fingers. Do not stir. Drizzle the ¾ cup melted butter over as much of the dry mix as you can. Dry patches stay powdery; puddles of butter brown. Go slow in thin streams. Scatter pecan halves on top.

Bake until bubbling

Bake 40–50 minutes until the top is golden brown and the edges are bubbling like pecan pie. The center can still look a little soft; it sets as it cools. If the top is brown at 35 minutes and the middle is liquid, tent loosely with foil and keep going.

Cool at least 20 minutes before scooping. Warm it’s lava. Room temp it slices more like a bar. Vanilla ice cream is not optional in spirit.

Pro Tips for Success 💡

Cover the dry mix with butter. That’s the whole dump-cake game. Unbuttered islands of cake mix taste like sweet dust.

Corn syrup is doing pie work — it keeps the filling gooey instead of sandy. Maple syrup as a full swap is thinner and can make a wetter center; if you try it, use ⅓ cup maple + 2 extra tablespoons brown sugar and expect a slightly different set.

Toast the pecans 8 minutes at 350°F if they smell dull. Cool before they go in the filling so they don’t scramble the eggs.

This is a dessert potluck cake, not a high-protein situation. If you want baked that’s still a weeknight, protein banana bread is the other pan. For a single-serve warm cake, apple mug cake is the small version of “I need cake now.” A cooler, no-bake chocolate fix: edible chickpea brownie batter. If you’d rather skip the oven entirely and eat dough, edible chocolate chip cookie dough is the bowl.

Recipe Variations 🔄

Butter pecan cake mix instead of yellow — nuttier topping.

Bourbon: 1 tablespoon in the filling. Holiday energy.

Chocolate chips: ½ cup over the filling before the cake mix.

No corn syrup: ½ cup brown sugar + ¼ cup honey + 2 tablespoons molasses. Texture is a little less slick, still good.

Gluten-free: GF yellow cake mix, same method. Check that your mix is a straight 1:1 dump style, not a mix that requires extra eggs in the topping — you’re using it dry.

Storage & Shelf Life ❄️

Covered at room temp: 1 day. Fridge: 4 days. The topping softens in the fridge; 10 minutes at 300°F brings the crunch back. Freeze slices: 2 months. Reheat from fridge, 15–20 seconds in the microwave for a gooey scoop.

Common Issues & Fixes ⚠️

Powdery top: butter didn’t cover the mix. Next time, drizzle slower. You can dot extra melted butter on dry spots at minute 20 if you catch it.

Soggy everywhere: underbaked, or too much filling liquid. Give it 5–10 more minutes. Cool longer.

Burnt pecans on top: tent with foil at minute 30.

Filling scrambled: butter was boiling hot when it hit the eggs. Let melted butter cool 5 minutes.

Stuck to the pan: you under-greased. Serve it in scoops and call it cobbler. Nobody’s mad.

Common Questions ❓

Do I prepare the cake mix with eggs and oil?

No. Dry mix only. That’s what “dump cake” means. If you mix it into batter, you have a different cake sitting on pecan pie filling — still edible, not this recipe.

Why not stir?

Stirring turns it into a pecan muffin batter. Layering is how you get a crusty top and a gooey bottom.

Can I use a homemade cake mix?

Yes — about 2 cups of dry yellow cake mix equivalent (flour + sugar + baking powder + salt + a little powdered milk if you have it). Seasoned dump-cakers still buy the box.

Eggs in the filling — is that like pecan pie?

Yes. That’s the custard. Don’t skip them if you want pie goo instead of just sticky sugar.

How many people?

12 dessert squares, 16 if there’s ice cream and other sweets on the table.

Nutrition Facts 📊

Per serving (1 of 12), approximate: 520 calories, 5 g protein, 54 g carbs, 32 g fat, 2 g fiber. Butter, pecans, cake mix. This is pecan pie in a pan. Don’t put it on a cut plan and then get mad at the pan.

Make-Ahead Timeline ⏰

Whisk filling, assemble, bake, cool 20 minutes, serve. You can mix the filling a few hours ahead and keep it cold; give it 10 minutes on the counter so it isn’t fridge-thick when you pour. Assembled unbaked dump cake sitting around is a bad idea — the cake mix starts hydrating and you lose the crusty top. Bake, then reheat. Day-old fridge slices plus 300°F for 10 minutes is how leftover dump cake gets its crunch back.

Allergen Information ⚠️

Tree nuts (pecans), gluten (cake mix), eggs, dairy (butter). Some yellow mixes contain soy. Corn syrup is not a nut. For pecan-allergic kitchens this recipe doesn’t have a great 1:1 — walnuts change it into a different cake. Gluten-free cake mix is the GF path.

Corn Syrup, Honesty, and Swaps 🍯

Light corn syrup is traditional pecan-pie texture: shiny, gooey, slices with a string. Dark corn syrup tastes more molasses. Honey is stronger and can brown faster. Maple is thinner. All-sugar fillings can crystallize. You can make pecan pie without corn syrup; this dump cake is the easy potluck version, and corn syrup is why it behaves. If you don’t keep it in the house, honey + extra brown sugar is the backup, not a perfect clone.

Serving Temperature 🍨

Warm with vanilla ice cream is the correct serving. Cold it’s denser and sweeter. Room temp is for the potluck table. A pinch of flaky salt on a warm square does more than extra frosting, which this cake does not need.

Cake Mix Box Sizes 📦

Boxes used to be 18.25 ounces, then 15.25, now some are 13.25. Use the whole current box. A smaller box means a slightly thinner topping, still fine. Don’t buy two boxes and dump both; you’ll have dry mix city. Butter pecan mix is a good swap. White mix is paler and a little less “buttery.” Chocolate mix on pecan pie filling is a different dessert people still eat.

Melted butter coverage: think “thin rain,” not “one puddle in the middle.” Start at the edges because those dry out first. If you run out of butter before the center is wet, melt 1 more tablespoon. Dry mix in the center is the complaint in every dump-cake comment section.

Eggs in the filling should be mixed until you don’t see streaks of white. Streaks scramble into rubber bits in the goo, which is unpleasant in a pecan pie situation.

Put a sheet pan under the 9×13. Corn-syrup filling that bubbles over onto a bare oven floor is a smoke alarm event and a Saturday cleaning project. I’ve never regretted the extra pan. I have regretted skipping it.

Pecans on top will darken. If they look too dark at minute 35 and the filling isn’t bubbling yet, foil tent. If they look pale at minute 45 and the filling is set, you’re done anyway — pale pecans still taste like pecans. Don’t wait for them to look like a magazine if the filling is already a rolling bubble.

Final Thoughts ❤️

Whisk the filling, dump the dry mix, drizzle the butter, don’t stir, bake until it bubbles. That’s pecan pie dump cake. Serve it warm. When you want a smaller, faster warm cake, make a mug cake; when you want chocolate without the oven, skip this pan entirely.