Canadian · Dessert
Nanaimo Bars
About this recipe
Canadian home cooking reflects regional traditions across a huge geography — Quebec's French legacy (tourtière, poutine), the British baking of the Maritimes, the Indigenous and Asian-influenced cuisines of the West Coast.
As a dessert, Nanaimo Bars is the part of cooking where ratio precision matters most: a five-percent miss on flour or sugar changes the texture in a way no savoury dish would notice. Weighing in grams beats measuring in cups every time.
The scaler above rewrites every measurement to your target serving count, with proper culinary fractions (½, ⅓, ¼) instead of decimals so the recipe stays measurable. Cook Mode steps you through it hands-free.
Recipe data is sourced from TheMealDB's open community database; ScaleRecipe handles the curation, the scaling math, the editorial commentary, and the conversion utilities woven into each page.
Translate this recipe
Reading in English
Listen to this recipe
No matching voice on this device
Method
- Start by making the biscuit base. In a bowl, over a pan of simmering water, melt the butter with the sugar and cocoa powder, stirring occasionally until smooth. Whisk in the egg for 2 to 3 mins until the mixture has thickened. Remove from heat and mix in the biscuit crumbs, coconut and almonds if using, then press into the base of a lined 20cm square tin. Chill for 10 mins.
- For the middle layer, make the custard icing; whisk together the butter, cream and custard powder until light and fluffy, then gradually add the icing sugar until fully incorporated. Spread over the bottom layer and chill in the fridge for at least 10 mins until the custard is no longer soft.
- Melt the chocolate and butter together in the microwave, then spread over the chilled bars and put back in the fridge. Leave until the chocolate has fully set (about 2 hrs). Take the mixture out of the tin and slice into squares to serve.
Cooking notes
Baked goods are unforgiving with rounding — use weights rather than volumes whenever possible, and verify pan capacity if you scale up or down significantly.
For volume-to-weight conversions of any ingredient — flour, sugar, butter, salts — use the ingredient converter. To translate the recipe's oven temperature between °C, °F and gas mark, see the temperature converter.
When you scale this recipe up or down, remember that cooking time does not scale linearly. A doubled cake takes longer, but not twice as long; a doubled soup takes roughly twice as long. The cooking-time guide gives sensible starting estimates by dish geometry.
Scaling notes
Scaling Nanaimo Bars
Nanaimo Bars is written for around four servings as it stands on this page — scaling it up for a party or down for a meal-for-one is the small math problem most home cooks face every week. Here's how this particular dish responds to scaling, what changes linearly, and what doesn't.
Desserts are the most scaling-sensitive category, and Nanaimo Bars is no exception — the leavening, fat, and liquid ratios all interact. Doubling means a doubled pan AREA (not diameter), and bake time scales by the cube root of the volume change: a doubled cake takes about 26 % longer, not 100 %. Weigh ingredients in grams rather than measuring in cups for consistent results.
This recipe calls for eggs, which are the trickiest ingredient to scale to non-integer multiples. A US "large" egg weighs about 50 g; if a fractional scaling lands on, say, 1.5 eggs, beat one egg and weigh 25 g of the beaten mixture rather than guessing. The same goes for halving recipes — half an egg is 25 g of beaten egg, not a dramatic estimate.
Butter is one of the easier ingredients to scale because it's sold in standardised sticks: 1 US stick = 8 tablespoons = ½ cup = 113 g. Any fractional scaling lines up neatly on a kitchen scale, and grocery-store butter packaging is already pre-marked in tablespoon increments along the wrapper.
Skip the math entirely — ScaleRecipe's scaler rewrites every ingredient line above with proper culinary fractions and smart unit promotion the moment you change the serving count. Open the scaler →
Beyond the recipe
Substitutions & make-ahead — Nanaimo Bars
Two things home cooks ask about most when they're outside the recipe's exact assumptions: what swaps work for which ingredients, and how the dish behaves when you make it ahead. Both depend on what Nanaimo Bars is doing structurally — here's the practical version.
Substitution ideas
Eggs
For binding (cookies, quick breads, meatballs): 1 large egg ≈ 1 tbsp ground flaxseed + 3 tbsp water, rested 5 minutes until gelled — structurally closest to a real egg. For moisture without structure (cakes, brownies): ¼ cup unsweetened applesauce or mashed banana per egg, accepting some loss of rise.
Butter
For sautéing or browning, equal-weight olive oil or a neutral oil works directly. For baking, equal-weight coconut oil (melted, then chilled to the same softness the recipe expects) gives a buttery richness; a quality vegan butter brick is the structural match for cookies and pastries where firmness matters.
Heavy cream
For sauces and soups: evaporated milk + 1 tbsp butter per cup approximates the body and richness. For whipping, the solid layer from chilled full-fat canned coconut milk whips into stable peaks (the flavour is coconut-forward; works in tropical desserts, less so in vanilla applications).
For weight-based swaps and arbitrary quantities, the ingredient density converter and the cup-to-grams chart cover most pantry staples.
Make-ahead and storage
Most desserts in Nanaimo Bars's family can be made one day ahead, but storage matters more than for savoury dishes. Cakes and breads go in an airtight container at room temperature — refrigeration stales them faster than room air. Custards, cream-based fillings, and any dessert with eggs as a structural ingredient must refrigerate. For freezer storage, unfrosted cake layers wrap tightly and keep 2 months; frosted versions ice-crystal within 3-4 weeks.
Recipe video
Nanaimo Bars
Keep cooking
More dessert recipes
Cooking aids
Tools to use while you cook this.
Each opens in a new tab so the timer keeps running. The math is auditable on the guide page below each converter, with worked examples and where the numbers come from.
Volume
Tablespoons, teaspoons, cups, ml, fluid ounces — every culinary volume unit, with US/metric/imperial cups handled distinctly.
OpenWeight
Grams, ounces, pounds, kilograms — exact for any ingredient, plus the volume-to-weight conversions for ~40 pantry staples.
OpenTemperature
Fahrenheit, Celsius, gas mark — translate any oven temperature, with notes on conventional vs convection.
OpenCooking time
The cube-root rule for scaling up, the differences between meat / cake / soup geometry, and sensible starting estimates.
OpenPan size
9-inch round vs 8-inch square vs 13×9. The math is surface area, not diameter — and the converter shows you both.
OpenLength
Inches and centimetres — for when a recipe says “cut into 1-inch pieces” and your ruler is metric.
OpenIngredient density
A cup of flour weighs 120 g; a cup of honey weighs 340. The full table of ~40 staples, with sources.
OpenOpen in main scaler
Edit the recipe text, scale by serving count, and copy the result. Same parser as the in-page scaler, more room to work.
OpenFrom the journal
Original essays on the small details.
The why behind the technique — original writing on the ingredient and equipment choices that separate a good cook from a frustrated one.
Reading a recipe like a chef
The 30-or-so recipe terms that show up most often, decoded
Read essayMay 4, 2026
Cooking for one — scaling principles
The math, the practical realities, and the recipes designed for one from the start
Read essayMay 4, 2026
How long do leftovers actually last?
Beyond the USDA's 3–4 days: the variables that actually determine the safe window
Read essayMay 4, 2026
Go deeper
Where this recipe sits in the wider tradition.
Each guide below is a real essay on the cuisine or the category — pillars, staples, techniques worth learning — paired with a curated grid of recipes filed under it.
Keep exploring
Ready to cook?
Scale it to your table, then get into the kitchen.
Send this recipe to the main scaler for further editing, or jump straight into Cook Mode for a hands-free walk-through with timers running.