Nanaimo Bar Recipe: The No-Bake Canadian Classic

This classic Nanaimo bar recipe delivers the iconic no-bake Canadian treat with its distinct layers and rich flavour.

Ingredients for Classic Nanaimo Bars

For the Base:

• 125 g (1/2 cup) unsalted butter, softened
• 50 g (1/4 cup) granulated sugar
• 5 mL (1 teaspoon) vanilla extract
• 1 large egg, lightly beaten
• 250 g (1 1/4 cups) graham cracker crumbs (about 1 sleeve)
• 50 g (1/2 cup) unsweetened shredded coconut
• 50 g (1/2 cup) chopped pecans or walnuts (optional, but traditional)

For the Custard Filling:

• 125 g (1/2 cup) unsalted butter, softened
• 45 mL (3 tablespoons) heavy cream (35% milk fat)
• 5 mL (1 teaspoon) vanilla extract
• 2 tablespoons instant custard powder (like Bird's, widely available in Canadian grocery stores)
• 250 g (2 cups) icing sugar (powdered sugar), sifted

For the Chocolate Topping:

• 175 g (6 ounces) semi-sweet chocolate, chopped (look for baking chocolate bars, not chocolate chips, for a smoother melt)
• 45 mL (3 tablespoons) unsalted butter

Step-by-Step Nanaimo Bar Instructions

1. Prepare the Base: In a medium saucepan over low heat, melt the 125g butter, sugar, and vanilla extract. Whisk in the beaten egg and cook, stirring constantly, for 2-3 minutes until the mixture thickens slightly. Remove from heat.

2. Stir in the graham cracker crumbs, shredded coconut, and chopped nuts (if using). Mix until well combined.

3. Press the mixture evenly into an ungreased 20 cm x 20 cm (8-inch x 8-inch) baking pan. Use the back of a spoon or your hands to compact it firmly. Refrigerate while you prepare the filling.

4. Make the Custard Filling: In a medium bowl, cream together the 125g softened butter, heavy cream, and vanilla extract until smooth.

5. Gradually beat in the instant custard powder and sifted icing sugar until light and fluffy. This may take 3-5 minutes with an electric mixer.

6. Spread the custard filling evenly over the chilled base. Return to the refrigerator to chill for at least 30 minutes, or until firm.

7. Prepare the Chocolate Topping: In a heatproof bowl set over a saucepan of simmering water (or in a microwave-safe bowl, heating in 30-second intervals), melt the chopped chocolate and 45mL butter together, stirring until smooth.

8. Pour the melted chocolate mixture over the chilled custard layer, spreading quickly and evenly.

9. Refrigerate for at least 1 hour, or until the chocolate topping is firm.

10. Cut and Serve: Once firm, remove the pan from the fridge. For clean cuts, dip a sharp knife in hot water and wipe it dry between each cut. Cut into squares or rectangles.

Tips for Perfect Nanaimo Bars

• Firm Compaction: Ensure the base layer is very firmly pressed into the pan. This prevents crumbling when you cut the bars.
• Sift Icing Sugar: Sifting the icing sugar for the custard layer prevents lumps and ensures a super smooth filling.
• Room Temperature Ingredients: Using softened butter for both the base and custard filling helps create a smoother, more evenly mixed consistency.
• Patience with Chilling: Don't rush the chilling steps. Each layer needs to be properly set for easy cutting and distinct layers.
• Sharp Knife for Cutting: A hot, sharp knife is key for clean cuts through the chocolate topping without cracking it.

Nanaimo Bar Variations to Try

While the classic is beloved, a few tweaks can introduce new flavours.

• Mint Chocolate: Add 1-2 mL (1/4 - 1/2 teaspoon) peppermint extract to the chocolate topping for a festive twist.
• Peanut Butter: Replace half of the butter in the custard filling with smooth peanut butter for a nutty variation.
• Espresso: Dissolve 5 mL (1 teaspoon) of instant espresso powder in the heavy cream for the custard filling for a subtle coffee flavour.
• Nut-Free: Simply omit the pecans or walnuts from the base layer for those with allergies or preferences.

Storing Your Nanaimo Bars

Nanaimo bars are best stored in an airtight container in the refrigerator. They will keep well for up to one week. You can also freeze them for longer storage. To freeze, place cut bars in a single layer on a baking sheet until solid, then transfer to a freezer-safe container or bag for up to 2-3 months. Thaw in the refrigerator before serving.

FAQ

Can I make Nanaimo bars ahead of time?

Absolutely! Nanaimo bars are an excellent make-ahead dessert. Their flavours actually meld and improve after a day or two in the fridge, making them perfect for entertaining.

Why is my chocolate topping cracking when I cut the bars?

The most common reason for cracking is that the chocolate layer is too cold, making it brittle. Let the pan sit at room temperature for 10-15 minutes before cutting, and use a very sharp knife that has been warmed under hot water and wiped dry.

What is instant custard powder and where can I find it?

Instant custard powder is a cornstarch-based powder that, when mixed with liquid and sugar, forms a creamy custard. It's usually found in the baking aisle of most Canadian grocery stores, often near other pudding mixes. Bird's is a popular brand.