No-Bake Wattleseed and Macadamia Caramel Slice

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A layered Australian dessert featuring a crunchy macadamia base, smooth caramel infused with roasted wattleseed, and a glossy chocolate topping. This australian-inspired desserts ready in about 35 minutes layers crushed digestive biscuits, melted unsalted butter, chopped macadamia nuts into a dessert worth slowing down for — great for weekend baking, holiday tables, or any time you want a sweet payoff at the end of a meal. Each serving lands at about 290 calories and feeds 12, so it slots into a weekend bake or a special-occasion dessert tray. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 15 min Serves 12 Australian cuisine 290 cal/serving
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Ingredients

Instructions

  1. Step 1: Line an 8-inch square baking pan with parchment paper. In a bowl, combine 200 g crushed digestive biscuits, 100 g melted unsalted butter, and 1/2 cup chopped macadamia nuts; mix until combined.
  2. Step 2: Press mixture firmly into the base of the prepared pan to form an even crust. Chill in the fridge while preparing caramel.
  3. Step 3: In a saucepan over medium-low heat, combine 1 can (395 g) sweetened condensed milk, 1/4 cup golden syrup, 50 g unsalted butter (for caramel), and 2 tbsp roasted wattleseed powder. Stir constantly for 10-12 minutes until mixture thickens and turns golden brown.
  4. Step 4: Pour caramel evenly over the chilled crust and return to fridge to set for 1 hour.
  5. Step 5: In a microwave-safe bowl, melt 150 g chopped dark chocolate with 1 tbsp light corn syrup in 30-second bursts, stirring between each until smooth and glossy.
  6. Step 6: Spread melted chocolate evenly over the set caramel layer and refrigerate for at least 2 hours until firm before slicing into bars.

Equipment for this recipe

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Frequently asked questions

How long does No-Bake Wattleseed and Macadamia Caramel Slice take to make?

Total time is about 35 minutes (20 min prep + 15 min cook). Most home bakers find this fits a weekend afternoon; chill or store as the recipe directs before serving.

How do I store leftover No-Bake Wattleseed and Macadamia Caramel Slice?

Cool fully before storing. Most baked desserts keep at room temperature in an airtight container for 2–3 days, or in the fridge for up to 5 days. Cream- or custard-based desserts must go in the fridge within 2 hours; reheat gently or serve cold per the recipe.

Can I substitute ingredients in No-Bake Wattleseed and Macadamia Caramel Slice?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale No-Bake Wattleseed and Macadamia Caramel Slice for a different number of people?

The recipe is written for 12 servings. Multiply each ingredient by (your serving target / 12). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with No-Bake Wattleseed and Macadamia Caramel Slice?

Australian desserts like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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