Guava Jam Coconut Macadamia Oat Bars

Featured in: Baking & Sweet Treats

These buttery dessert bars combine the tropical sweetness of guava jam with a crunchy golden topping featuring shredded coconut, roasted macadamia nuts, and old-fashioned oats. The preparation involves pressing a simple flour-oat crust into a pan, spreading a tangy lime-enhanced guava filling, and finishing with the reserved crumble mixture.

After 30-35 minutes of baking until golden brown, the bars cool completely before being cut into 16 portable servings. The result is a delightful fusion of textures—crisp crumble, buttery crust, and luscious fruit filling—that brings tropical flavors to your dessert table.

Updated on Sat, 07 Feb 2026 14:17:47 GMT
Guava Jam Bars with Coconut Macadamia Oat Crumble cut on a wooden board with lime wedges. Pin it
Guava Jam Bars with Coconut Macadamia Oat Crumble cut on a wooden board with lime wedges. | vectorbaker.com

These Guava Jam Bars are a buttery, tropical-inspired dessert that brings a taste of the islands to your kitchen. Layers of sweet guava jam are topped with a golden, crunchy crumble featuring toasted coconut, macadamia nuts, and oats for a perfect balance of textures.

Guava Jam Bars with Coconut Macadamia Oat Crumble cut on a wooden board with lime wedges. Pin it
Guava Jam Bars with Coconut Macadamia Oat Crumble cut on a wooden board with lime wedges. | vectorbaker.com

The secret to these bars lies in the macadamia nuts, which provide a rich, buttery crunch that perfectly complements the thick, aromatic guava filling. A splash of lime juice helps balance the sweetness, making every bite refreshing.

Ingredients

  • 1 cup (130 g) all-purpose flour
  • 1 cup (100 g) old-fashioned rolled oats
  • 1/2 cup (100 g) granulated sugar
  • 1/3 cup (65 g) packed light brown sugar
  • 1/2 teaspoon salt
  • 1/2 teaspoon ground cinnamon
  • 1/2 cup (115 g) unsalted butter, melted
  • 1/2 cup (40 g) unsweetened shredded coconut
  • 1/2 cup (60 g) roasted macadamia nuts, roughly chopped
  • 1 cup (320 g) guava jam or guava paste, softened
  • 1 tablespoon fresh lime juice
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Instructions

Step 1: Prep
Preheat oven to 350°F (175°C). Line an 8-inch (20 cm) square baking pan with parchment paper, leaving an overhang for easy removal.
Step 2: Mix Crumble
In a large bowl, combine the flour, oats, granulated sugar, brown sugar, salt, and cinnamon. Stir in melted butter until the mixture forms moist crumbles. Add coconut and chopped macadamia nuts, mixing to combine.
Step 3: Press Crust
Reserve 1 cup of the mixture for the topping. Press the remaining mixture evenly into the bottom of the prepared pan to form the crust.
Step 4: Layer Filling
In a small bowl, stir together guava jam and lime juice until smooth. Spread evenly over the crust.
Step 5: Add Topping
Sprinkle the reserved crumble mixture evenly over the jam layer.
Step 6: Bake
Bake for 30–35 minutes, until the topping is golden brown and the jam is bubbling at the edges.
Step 7: Cool and Cut
Let cool completely in the pan. Lift out using the parchment overhang and cut into 16 bars.

Zusatztipps für die Zubereitung

Make sure to let the bars cool completely before lifting them out of the pan. This allows the jam to set and ensures the crust doesn't crumble when you cut it into individual bars.

Varianten und Anpassungen

If you cannot find guava jam, you can easily substitute it with apricot or raspberry jam for a similarly sweet and tart result. You can also use guava paste; just be sure to soften it with a little warm water or lime juice until it reaches a spreadable consistency.

Serviervorschläge

These bars are delicious on their own, but for a truly decadent touch, serve them with a scoop of premium vanilla ice cream or a dollop of whipped cream.

Freshly baked Guava Jam Bars with Coconut Macadamia Oat Crumble served on a white plate. Pin it
Freshly baked Guava Jam Bars with Coconut Macadamia Oat Crumble served on a white plate. | vectorbaker.com

Whether enjoyed as a midday snack or a unique dessert for a gathering, these Guava Jam Bars offer a beautiful fusion of buttery shortbread and vibrant tropical fruit.

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Recipe FAQs

Can I use a different jam flavor?

Yes, apricot or raspberry jam works beautifully as substitutes if guava is unavailable in your area.

Should I toast the coconut and macadamias first?

Lightly toasting the coconut and macadamias before adding them enhances their natural flavors and creates a more aromatic crumble topping.

How do I store these bars?

Store in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week for extended freshness.

Can I make these ahead of time?

Absolutely—these bars actually improve in flavor after resting overnight. The textures meld together beautifully for a more cohesive bite.

What's the purpose of lime juice in the filling?

Fresh lime juice brightens the guava jam's sweetness, adds a tropical tang, and helps balance the rich buttery elements.

Can I freeze these bars?

Yes, wrap individual bars in plastic and freeze for up to 3 months. Thaw at room temperature before serving.

Guava Jam Coconut Macadamia Oat Bars

Buttery bars with sweet guava jam and coconut macadamia oat crumble topping

Time to prep
20 minutes
Time to cook
35 minutes
Overall time
55 minutes
Created by Jack Sanchez


Skill level Medium

Cuisine type Tropical Fusion

Makes 16 Portions

Dietary details Meat-free

What you need

Crust and Crumble

01 1 cup all-purpose flour
02 1 cup old-fashioned rolled oats
03 1/2 cup granulated sugar
04 1/3 cup packed light brown sugar
05 1/2 teaspoon salt
06 1/2 teaspoon ground cinnamon
07 1/2 cup unsalted butter, melted
08 1/2 cup unsweetened shredded coconut
09 1/2 cup roasted macadamia nuts, roughly chopped

Filling

01 1 cup guava jam or guava paste, softened
02 1 tablespoon fresh lime juice

Directions

Step 01

Prepare Baking Pan: Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving overhang for easy removal.

Step 02

Mix Dry Ingredients: In a large bowl, combine flour, oats, granulated sugar, brown sugar, salt, and cinnamon. Stir in melted butter until mixture forms moist crumbles. Add coconut and chopped macadamia nuts, mixing thoroughly.

Step 03

Form Crust Layer: Reserve 1 cup of crumble mixture for topping. Press remaining mixture evenly into bottom of prepared pan to form crust base.

Step 04

Prepare Filling: In a small bowl, stir together guava jam and lime juice until smooth consistency is achieved.

Step 05

Assemble Layers: Spread guava mixture evenly over crust layer. Sprinkle reserved crumble mixture uniformly over jam layer.

Step 06

Bake Bars: Bake for 30 to 35 minutes, until topping is golden brown and jam bubbles at edges.

Step 07

Cool and Cut: Allow bars to cool completely in pan. Lift out using parchment overhang and cut into 16 equal bars.

Tools you'll need

  • 8-inch square baking pan
  • Mixing bowls
  • Measuring cups and spoons
  • Parchment paper
  • Spatula
  • Knife

Allergy advice

Always check each ingredient for allergens and talk to a healthcare pro if you’re unsure.
  • Contains wheat and gluten
  • Contains dairy from butter
  • Contains tree nuts, specifically macadamia

Nutrition info (per portion)

These values are estimates for your reference. They’re not a substitute for professional medical advice.
  • Calorie count: 195
  • Fat content: 10 grams
  • Carbohydrates: 25 grams
  • Proteins: 2 grams