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Shortbread Base | Baked Lemon Curd

Lemon Bars are a classic tray-baked dessert consisting of a buttery shortbread crust topped with a bright, baked lemon custard layer. Unlike stovetop lemon curd, this version is baked directly over the shortbread base, allowing the egg structure to set gently in the oven while maintaining a smooth, sliceable texture.

The contrast between the rich shortbread base and the tart citrus custard creates a balanced dessert widely used in pastry shops, cafés, and plated dessert menus.

What you will need:

Short Bread

IngredientQuantity (g)
Unsalted butter113
Sugar50
Salt2
Vanilla4
All-purpose flour152

Lemon Layer

IngredientQuantity (g)
Lemon zest12
Lemon juice100
Sugar250
Whole eggs240

Equipments:

  • Digital Scale
  • 20 × 30 cm tray or frame
  • Parchment paper
  • Mixing bowl
  • Whisk
  • Microplane or fine zester
  • Citrus juicer
  • Offset spatula
  • Wire cooling rack
  • Slicing Knife

Time:

StageTime
Shortbread BaseRefer to previously developed shortbread recipe
Lemon Curd Mixing5 minutes
Baking25 minutes
Cooling1–2 hours

Instructions:

Short Bread Base
  • Use the Classic Shortbread formula (Creaming Method).
  • Roll to 5 mm thickness (slightly thinner than cookie version).
  • Dock lightly.
  • Bake at 160°C until pale golden (approx. 20 minutes).
  • Cool completely in frame before adding lemon curd mixture.
Lemon Curd Layer
  • In a bowl, rub sugar and lemon zest till the sugar is fragrant.
  • Now add lemon juice, and eggs and whisk until fully combined.
  • Strain the mixture through a sieve to remove the lemon zest.
  • Pour mixture directly over the partially cooled shortbread base.
  • Bake at 160°C for 25 minutes.
  • Rotate tray halfway through baking for even setting.
  • Target texture: fully set custard with slight center softness.
Slicing
  • Cool completely at room temperature before cutting.
  • Chill briefly if needed for cleaner slicing.
  • Cut using a hot knife wiped between cuts.
Try these!
  • Lime Bars: Replace lemon juice with lime juice.
  • Passionfruit Bars: Replace 50% lemon juice with passionfruit purée.
  • Coconut Lemon Bars: Add 40 g toasted coconut to shortbread base.
  • Meyer Lemon Version: Substitute Meyer lemon juice for softer acidity.
  • Lavender Lemon Bars: Infuse lemon juice with culinary lavender.
Serving Suggestions
  • Dust lightly with powdered sugar before service.
  • Pair with fresh berries or raspberry coulis.
  • Serve chilled or at cool room temperature.
  • Garnish with thin candied lemon zest.
Applications
  • Café traybake dessert
  • Afternoon tea pastry selection
  • Retail bakery bar cookie
  • Plated dessert component (served with berry coulis)
  • Buffet dessert squares
Nutrition Profile / 100g
NutrientAmount
Energy~345 kcal
Fat15 g
Carbohydrates47 g
Sugars34 g
Protein6

Note: These values are approximate and can vary based on the specific brands and types of ingredients used, as well as portion sizes.

Tips for Best Results:

  • Mix lemon zest into sugar first to extract citrus oils.
  • Avoid excessive whisking which can introduce bubbles in the custard.
  • Pour filling through a strainer if foam forms.
  • Rotate tray at midpoint to ensure even setting.
  • Dust with icing sugar only immediately before serving to prevent absorption.

Troubleshooting Guide:

Issue (with Cause)Fix
Lemon layer too soft due to underbakingBake until custard center is just set (160°C / 25 min)
Cracks in surface caused by overbakingRemove once center barely jiggles
Separation between layers caused by hot baseAllow shortbread to cool slightly before pouring curd
Rubbery custard due to excessive egg coagulationMaintain moderate oven temperature (160°C)
Bubbles on surface caused by over-whiskingStrain mixture before pouring

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