Susan’s 3-Ingredient Pineapple Coconut Bake Sale Bars

There’s always that one person at family gatherings who can make the simplest dessert disappear before anything else on the table. In my family, that person is Susan.

Her favorite bake-sale treat takes just three ingredients: yellow cake mix, crushed pineapple, and shredded coconut. No eggs, no oil, and no mixer. Everything goes into one bowl, then into the oven until golden and set.

The result is a soft, moist bar with sweet pineapple flavor and chewy coconut. It’s simple enough for a school bake sale but tasty enough for a family gathering or potluck.

The 3 Ingredients

1 box yellow cake mix
1 can crushed pineapple in juice, undrained (about 20 ounces)
1 cup shredded sweetened coconut

The important part is to leave the pineapple undrained. Its juice provides the moisture needed to turn the cake mix into a thick batter.

How to Make the Bars

1. Prepare the Oven

Preheat the oven to 350°F (175°C). Lightly grease a 9-by-13-inch baking pan. For easier removal, line it with parchment paper.

2. Mix the Ingredients

Add the cake mix, undrained crushed pineapple, and shredded coconut to a large bowl. Stir until everything is evenly combined and there are no dry pockets.

The mixture will be thick, so don’t worry if it doesn’t look like traditional cake batter.

3. Spread the Batter

Transfer the mixture to the prepared pan. Use a spatula or the back of a spoon to spread it evenly into the corners.

4. Bake

Bake for 25–35 minutes, or until the top is lightly golden and the center is set. Start checking early since oven temperatures can vary.

5. Cool and Slice

Let the bars cool completely in the pan before cutting. They will firm up as they cool, making them easier to slice neatly.

Tips for the Best Pineapple Bars

Don’t drain the pineapple: The juice is essential for keeping the bars moist.
Don’t overmix: Stir just until the ingredients come together.
Spread the batter evenly: Because it is thick, take a moment to smooth it across the pan.
Avoid overbaking: Remove the bars once the center is set and the top is lightly golden.
Cool before cutting: This gives the bars a better texture and cleaner edges.

Easy Variations

Powdered Sugar: Dust the cooled bars lightly with powdered sugar.
Simple Glaze: Drizzle a glaze made with powdered sugar and a little milk or pineapple juice.
Extra Coconut: Sprinkle toasted coconut over the cooled bars.
Add Nuts: Chopped pecans or macadamia nuts add a pleasant crunch.
Whipped Cream: Serve individual bars with a small spoonful of whipped cream for a simple dessert.

Frequently Asked Questions

Can I use white cake mix?

Yes. White cake mix works well, although the flavor will be slightly different.

Can I use fresh pineapple?

Canned crushed pineapple is the better choice for this recipe because its moisture level is more predictable. Fresh pineapple can change the consistency of the batter.

Can I leave out the coconut?

You can, but the texture will be different. The coconut adds sweetness and chewiness to the bars.

Why is my batter so thick?

That’s normal. This recipe doesn’t make a traditional cake batter. The mixture should be thick and spreadable.

How should I store the bars?

Once completely cooled, store them in an airtight container. For longer storage, refrigerate them.

Can I freeze them?

Yes. Wrap the cooled bars well and place them in a freezer-safe container. Thaw them in the refrigerator or at room temperature before serving.

Why This Recipe Is a Keeper

Susan’s bars prove that a good dessert doesn’t need a long ingredient list or complicated preparation.
With three ingredients, one bowl, and one pan, you get soft pineapple-coconut bars that are easy to make, easy to serve, and perfect for sharing.
And if there’s one thing worth remembering, it’s Susan’s little rule:
Don’t drain the pineapple.