Here is a recipe for Creamy Vanilla Custard Squares.
These are a classic no-bake dessert (or bake then chill) consisting of a buttery crust, a silky vanilla custard layer, and often a glossy topping. They are reminiscent of Italian Millionaire’s Squares or British Custard Slices, but simplified into an easy bar form.
I’ll provide two versions: a Classic Baked Custard Square (richer) and a No-Bake Vanilla Custard Square (easier).
Version 1: Classic Baked Custard Squares
This version has a shortbread crust and a baked custard layer that sets to a silky, firm texture.
The Core Ingredients
*(Makes 9-12 squares)*
For the Crust:
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1 1/2 cups All-Purpose Flour
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1/2 cup Powdered Sugar
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3/4 cup Cold Butter, cut into small cubes
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1/4 tsp Salt
For the Custard Layer:
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2 cups Whole Milk
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1/2 cup Heavy Cream
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3/4 cup Granulated Sugar
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1/4 cup Cornstarch
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4 large Egg Yolks
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2 tbsp Butter
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2 tsp Vanilla Extract (or 1 vanilla bean, scraped)
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1/4 tsp Salt
For the Topping (Optional):
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Powdered sugar for dusting, or a thin layer of melted white chocolate, or a sprinkle of nutmeg.
The Method
Step 1: Make the Crust
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Preheat oven to 350°F (175°C) . Line an 8×8 or 9×9 inch pan with parchment paper, leaving overhang.
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In a bowl, whisk flour, powdered sugar, and salt. Cut in the cold butter using a pastry blender or your fingers until the mixture resembles coarse crumbs.
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Press the mixture firmly into the bottom of the prepared pan.
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Bake for 18-20 minutes until lightly golden. Set aside to cool slightly.
Step 2: Make the Custard
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In a medium saucepan, heat the milk and cream over medium heat until warm (do not boil).
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In a separate bowl, whisk together the sugar, cornstarch, egg yolks, and salt until pale and thick.
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Temper the eggs: Slowly pour about 1/2 cup of the warm milk into the egg mixture while whisking constantly. This prevents the eggs from scrambling.
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Pour the egg mixture back into the saucepan with the remaining milk.
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Cook over medium heat, whisking constantly, until the mixture thickens and comes to a gentle boil (about 5-7 minutes). It should be very thick, like pudding.
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Remove from heat and whisk in the butter and vanilla extract until smooth.
Step 3: Assemble
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Pour the hot custard over the warm crust and spread evenly.
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Cover with plastic wrap directly on the surface of the custard (to prevent a skin from forming).
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Refrigerate for at least 4 hours, preferably overnight.
Step 4: Slice and Serve
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Lift the chilled slab out using the parchment overhang.
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Slice into squares with a sharp knife, wiping the blade clean between cuts.
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Dust with powdered sugar just before serving.
Version 2: No-Bake Vanilla Custard Squares
This version uses a cookie crust and a quick-setting custard made with instant pudding—perfect for hot days.
The Core Ingredients
For the Crust:
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2 cups Graham Cracker Crumbs (or vanilla wafer crumbs)
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1/2 cup Butter, melted
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1/4 cup Sugar
For the Custard Layer:
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2 boxes (3.4 oz each) Instant Vanilla Pudding Mix
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2 1/2 cups Cold Milk (whole milk works best)
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1 tsp Vanilla Extract
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1 cup Whipped Topping (like Cool Whip), thawed
For the Topping:
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1 cup Whipped Topping
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Ground Nutmeg or Cinnamon for dusting
The No-Bake Method
Step 1: Make the Crust
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Combine crumbs, melted butter, and sugar. Press firmly into the bottom of an 8×8 pan lined with parchment.
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Refrigerate for 20 minutes to set.
Step 2: Make the Custard
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In a large bowl, whisk the instant pudding mix with cold milk and vanilla for 2 minutes until thick.
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Gently fold in the 1 cup of whipped topping until smooth.
Step 3: Assemble
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Spread the custard evenly over the chilled crust.
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Top with the remaining 1 cup of whipped topping, spreading gently.
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Refrigerate for at least 4 hours until firm.
Step 4: Serve
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Slice and dust with nutmeg or cinnamon.
⚠️ The Most Important Tips
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For baked version: Whisk the custard constantly while cooking. If you stop, it will scorch or form lumps.
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For no-bake version: Use instant pudding, not cook-and-serve. Cook-and-serve won’t set properly without heat.
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Cover with plastic: Always press plastic wrap directly onto the custard surface while chilling. This prevents the dreaded “pudding skin.”
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Chill thoroughly: These squares need time to set. Rushing leads to messy slices.
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Clean knife cuts: For clean edges, run your knife under hot water, wipe dry, and slice. Clean between cuts.
3 Variations
1. Chocolate Swirl
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Melt 1/4 cup semi-sweet chocolate and drizzle it into the custard before chilling. Swirl with a knife.
2. Coconut Custard Squares
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Add 1/2 cup toasted shredded coconut to the custard and sprinkle more on top.
3. Lemon Vanilla
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Add 1 tbsp lemon zest to the custard and use a shortbread crust with a hint of lemon zest.
Storage
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Keep refrigerated in an airtight container for up to 3 days.
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These squares are best enjoyed within 24-48 hours for optimal texture.