Pineapple Cake Mix Bars are buttery crumb bars with a sweet-tangy pineapple layer tucked right in the middle. They’re the kind of dessert I’d rather bring to a potluck than plain sheet cake, because you get crisp edges and a softer, jammy center.
What I like about this version is the thick, sandy crumb on top and bottom, plus that pineapple filling that tastes a little brighter thanks to lemon and vanilla. They’re simple, but they don’t taste flat.
For me, these are especially good on a cookie tray, a bake sale table, or as an easy weekend dessert when I want something cut-into-squares and done. I usually serve them chilled or at cool room temp so the filling slices clean.
Why You’ll Love This Recipe
Fast and easy: Cake mix does a lot of the work here, and you don’t need a mixer. It’s a quick stir-and-bake kind of recipe.
Buttery crumb: You get a thick, buttery crust and a crumb topping in one mixture, which keeps things simple and dependable.
Bright pineapple filling: The pineapple is sweet, but the lemon juice keeps it tasting fresh instead of heavy.
Good slicing bars: Once they’re fully cooled, these cut into neat squares that travel well for parties and bake sales.
Easy to tweak: You can add coconut or pecans for texture, or pull back the sugar if you like a less-sweet bar.
Ingredients You’ll Need
Crust and Topping
- Yellow cake mix: I use a standard box of yellow cake mix here. It gives you that classic buttery “crumb bar” flavor with almost no effort.
- Eggs: These bind the crumb mixture so it bakes up sliceable instead of sandy and loose.
- Unsalted butter: Melted butter makes the crumbs richer and helps them toast up on top. If your butter is hot, let it cool a minute so it doesn’t scramble the eggs.
- Granulated sugar: Just a little extra sweetness and a more crisp edge on the crust.
- Kosher salt: Don’t skip it. It keeps the cake mix from tasting one-note sweet.
Pineapple Filling
- Crushed pineapple: Use canned crushed pineapple and drain it really well. This is the biggest thing that keeps the bars from turning soggy.
- Light brown sugar: I like the slight caramel note with pineapple. Dark brown sugar works too if that’s what you have.
- Cornstarch: This thickens the filling as it bakes so it sets up like a soft fruit layer instead of a wet puddle.
- Lemon juice: A small amount makes the pineapple taste brighter and a little more tangy.
- Vanilla extract: Vanilla rounds out the filling and makes it taste more like a dessert bar than a can of fruit.
Optional Glaze
- Powdered sugar: This is just for a light drizzle on top. I keep it thin so it doesn’t hide the crumb texture.
- Pineapple juice or milk: Pineapple juice keeps the flavor going, but milk is fine if you don’t want to open anything extra.
- Vanilla extract: A little vanilla makes the glaze taste finished instead of just sweet.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F. Line a 13 x 9-inch pan with parchment paper and lightly grease it.
- Mix the crumbs: Stir the yellow cake mix, eggs, melted butter, granulated sugar, and kosher salt together until you have a thick, crumbly mixture.
- Press the crust: Press about two thirds of the crumb mixture evenly into the prepared pan to form the crust.
- Chill the crumbs: Put the remaining crumb mixture in the fridge while you make the filling. This helps the topping stay crumbly and bake up more golden.
- Mix the filling: Whisk the drained crushed pineapple with the brown sugar, cornstarch, lemon juice, and vanilla until everything is evenly combined and you don’t see dry cornstarch.
- Add the filling: Spread the pineapple filling over the crust in an even layer.
- Add the topping: Sprinkle the chilled crumbs evenly over the filling, breaking up any big clumps with your fingers.
- Bake: Bake for about 25 to 30 minutes, until the top is golden and the filling looks set (not wet and sloshy in the center).
- Cool: Cool completely before slicing so the filling can finish setting up.
- Glaze and slice: If using, whisk powdered sugar with pineapple juice (or milk) and vanilla until it’s pourable, then drizzle over the cooled bars. Let it set for about 10 minutes, then cut into bars.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Drain the pineapple like you mean it. I press it in a fine-mesh strainer until it stops dripping. Extra juice is the quickest way to end up with a soft crust.
Chill the leftover crumbs. It’s a small step, but it helps the topping stay more crumbly instead of melting into the filling layer.
Watch the center, not just the color. The top can look golden while the middle is still loose. I bake until the center looks set and doesn’t jiggle like liquid.
Let them cool all the way. These slice much cleaner once the filling has had time to thicken as it cools. If you cut too soon, it tends to smear.
Add coconut or pecans if you want more texture. I mix them right into the crumb mixture so you get crunch in both the crust and the topping.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Glaze: Drizzle the simple glaze over the top if you want a little extra sweetness and a “finished” look. I keep it light so the crumbs still show.
- Whipped cream: A small spoonful of lightly sweetened whipped cream is nice if you’re serving these on plates for dessert. It also helps if you reduced the brown sugar and want a touch more sweetness.
- Ice cream: Vanilla ice cream on the side is great if you warm a bar for a few seconds. It turns it into more of a plated dessert.
- Fresh fruit: Strawberries, mango, or a simple bowl of mixed berries work well next to the pineapple flavor. I like this when serving them at brunch.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store them airtight at room temperature for up to 3 days. If your kitchen runs warm, I usually move them to the fridge after the first day.
Refrigerate for up to 5 days for the cleanest slices. They get a little firmer chilled, which I actually like with fruit-filled bars.
You can make them a day ahead and glaze right before serving if you want the drizzle to look fresh. If you glaze early, it still tastes fine, it just soaks in a bit more.
If you want them longer than that, you can freeze the bars (whole slab or individual pieces) and thaw in the fridge overnight. I usually glaze after thawing.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
Do I really need to drain the crushed pineapple?
Yes, it matters a lot for this recipe. If the pineapple is too wet, the crust can bake up soft and the filling can feel loose.
I drain it in a strainer and press it with a spoon until it stops dripping. It only takes a minute and it’s worth it.
Can I make these less sweet?
You can reduce the brown sugar in the filling to about 1/3 cup. The bars will still taste sweet (cake mix and pineapple both bring sweetness), but they won’t be as candy-sweet.
How do I know when the bars are done baking?
I look for a golden top and a filling that looks set in the center. A little jiggle is fine, but it shouldn’t look wet or sloshy.
If the edges are getting too dark and the center still looks loose, tent the pan loosely with foil for the last few minutes.
Can I add coconut or nuts?
Yes. I like adding shredded coconut or chopped pecans to the crumb mixture for extra texture. It’s an easy add-in that works well with pineapple.
Do I have to glaze them?
No, they’re good without it. I glaze when I’m serving them for a party or bake sale, but for everyday snacking I usually leave them plain.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Pineapple Cake Mix Bars
INGREDIENTS
Crust and Topping
- 1 box yellow cake mix 15.25 oz
- 2 large eggs
- ½ cup unsalted butter melted
- ¼ cup granulated sugar
- ½ tsp kosher salt.
Pineapple Filling
- 1 can crushed pineapple 20 oz drained well
- ½ cup packed light brown sugar
- 2 tbsp cornstarch
- 1 tbsp lemon juice
- 1 tsp vanilla extract.
Optional Glaze
- ½ cup powdered sugar
- 1 tbsp pineapple juice or milk
- ¼ tsp vanilla extract.
INSTRUCTIONS
Pan and Oven
- Heat oven to 350 F
- line a 13 by 9 inch pan with parchment and lightly grease.
Crust and Crumbs
- Mix cake mix
- eggs
- melted butter
- granulated sugar
- and salt until thick and crumbly
- press about two thirds of mixture evenly into the pan to form a crust
- chill remaining crumbs while making filling.
Filling and Bake
- Whisk drained pineapple with brown sugar
- cornstarch
- lemon juice
- and vanilla until evenly combined
- spread filling over crust
- sprinkle remaining crumbs over filling
- bake until top is golden and filling is set about 25 to 30 minutes
- cool completely before slicing.
Optional Glaze and Serve
- Whisk powdered sugar with pineapple juice and vanilla to a pourable consistency
- drizzle over cooled bars
- let set 10 minutes then cut into bars.
