Chewy Caramel and Walnut Slice Recipe for Dessert Bars

Caramel Walnut Slice is an oat-based slice studded with candied walnuts and filled with sweet, buttery caramel. It’s a delicious twist on classic caramel oat bars, offering a pleasing contrast of crunchy, salty-sweet walnuts against a soft, caramel-centred oat base.

Candied walnut oat slice on a purple background.

This recipe is inspired by my beloved buttery caramel oat bars and keeps everything simple while delivering big flavour. The caramel is rich and creamy, the oat slice is tender with coconut and oats for texture, and the candied walnuts add crunchy bursts of sweet and salty flavour throughout.

Pieces of walnut caramel slices on a plate and purple background.

To make the walnuts, they are briefly cooked in coconut oil, maple syrup and a pinch of salt, then cooled to form a shiny, flavourful coating. If you prefer, you can simply roast the walnuts in a 180°C oven for about 10 minutes — they’ll still add a lovely toasted note.

Pieces of walnut caramel slice on a plate.

Why Candy the Walnuts?

Candying the walnuts creates a balanced sweet-and-salty crunch that elevates each bite. The syrupy coating toasts slightly when cooled, intensifying the nutty flavour and giving a pleasant contrast to the creamy caramel and chewy oats.

If you choose not to candy the walnuts, simply roast them in the oven at 180°C (350°F) for about 10 minutes until fragrant and lightly golden.

Candied walnut oat slice pieces on a plate.

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Print Recipe

5 from 1 vote

Caramel Walnut Slice

An oat slice with a creamy caramel centre and candied walnuts for crunch and sweet-salty contrast.

Prep Time
30 mins

Cook Time
30 mins

Total Time
1 hr

Course: Dessert, Snack

Cuisine: American

Servings:
24 Slices

Calories:
372kcal

Author: Emma Burton

Ingredients

Candied Walnuts

1 1/2 Cups Walnuts, chopped (170g)
2 1/2 Tbsp Coconut Oil
1/2 tsp Salt
6 Tbsp Maple Syrup (92g)
1/2 tsp Vanilla Extract

Oat Slice

1 Cup Butter, melted (220g)
1 1/2 Cups Brown Sugar (300g)
2 Large Eggs
1 2/3 Cups All Purpose Flour (220g)
1 Cup Self-Raising Flour (180g)
1 Cup Shredded or Desiccated Coconut (85g)
2 1/2 Cups Rolled Oats (250g)

Caramel

1 Tin Sweetened Condensed Milk (397g)
1/2 Cup Butter (110g)
1/4 Cup Golden Syrup (90g)
1 tsp Vanilla Extract

Instructions

Candied Walnuts

Chop the walnuts into small pieces.
In a medium-high fry pan combine coconut oil, salt, maple syrup, vanilla extract and the walnuts. Cook for about 5 minutes, stirring constantly to prevent burning.
Spread the walnuts on non-stick paper and allow to cool completely while you make the caramel.

Caramel

Place condensed milk, golden syrup and butter in a saucepan over medium heat and stir until melted and combined.
Remove from heat and stir in the vanilla extract.
Let the caramel cool slightly while you prepare the oat slice base.

Oat Slice

Preheat the oven to 180°C (350°F). Line a 9″x13″ (23x33cm) baking tin with baking paper.
Mix the brown sugar and melted butter in a bowl, then add the eggs and combine.
Stir in both flours, oats and coconut until evenly combined.
Fold through three-quarters of the candied walnuts.
Press two-thirds of the oat mixture into the base of the prepared pan.
Pour the caramel over the base, then crumble the remaining oat mixture on top and sprinkle with the remaining candied walnuts.
Bake for around 30 minutes, until the top and sides are a light golden colour.
Cool completely before slicing. Chilling in the fridge helps the caramel set for cleaner slices.
Store in an airtight container for up to a week.

Nutrition

Serving: 1Slice
|
Calories: 372kcal
|
Carbohydrates: 45 g
| Protein: 6 g
| Fat: 20 g

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