Lemon Juice and Zest Bars

Introduction

These lemon bars use a crumbly base of flour, powdered sugar, and softened margarine, then get a second bake with a lemon topping made from 4 eggs, lemon juice, and zest. The two-stage method gives you a firm bottom and a soft, set citrus layer, which makes them a good make-ahead dessert for sharing.

Recipe Details

• Prep Time: 20 minutes
• Cook Time: 50 minutes
• Total Time: 1 hour 10 minutes
• Servings: 16

Ingredients

Base

• 2 cups (480 ml) all-purpose flour
• ¾ cup (180 ml) powdered sugar
• 1 cup (240 ml/g) margarine (softened)

Topping

• 4 eggs
• ⅓ cup (80 ml) lemon juice
• 1 ½ cup (360 ml) white sugar
• ¼ cup (60 ml) all-purpose flour
• 1 teaspoon (5 ml) baking soda
• 1 tablespoon (15 ml) grated lemon peel (zest)
• Powdered sugar, as needed

Instructions

Base

1. Combine flour and sugar in a medium mixing bowl.
2. Cut in margarine until mixture resembles fine crumbs.
3. Press firmly into a greased square (8 x 8 or 9 x 9-inch) pan.
4. Bake at 350°F (180°C) for about 20-30 minutes, until lightly browned. Prepare the topping in the meantime.

Topping

1. Beat eggs in large mixing bowl until frothy. Stir in the lemon juice and rind.
2. In another bowl, stir together the sugar, flour, and baking powder.
3. Add dry mixture to wet mixture. Stir until just moistened.
4. Spread evenly over the hot base, and return to oven to bake for 20-25 minutes, or until set.
5. Let squares cool before removing from pan and cutting. Dust with powdered sugar.

Variations

• Replace the margarine in the base with unsalted butter if you want a firmer, richer shortbread-style crust.
• Swap the lemon juice and lemon peel for lime juice and lime zest for a sharper, slightly more bitter citrus flavor.
• Use a 1:1 gluten-free flour blend in place of the all-purpose flour in both the base and topping to make the bars gluten-free; the filling will be slightly softer.
• Skip the powdered sugar finish if you plan to store the bars for several days; the surface stays cleaner and less sticky in the fridge.

Tips for Success

• Press the base firmly into the pan so it bakes into an even layer and does not crumble when you cut the bars.
• Bake the base until it is lightly browned before adding the topping; a pale base can turn soggy under the lemon layer.
• Pour the topping over the hot base, as directed, so the layers bond well and bake evenly.
• Let the bars cool fully before cutting. The topping continues to set as it cools, which gives you cleaner squares.
• Check your leavener before you mix the topping. The ingredient list and method use different terms, so measure it once and use it consistently.

Storage and Reheating

Store the bars in an airtight container in the fridge for up to 5 days. If you stack them, place parchment paper between layers to keep the topping and powdered sugar from sticking.

For longer storage, freeze the cut bars in a freezer-safe container with parchment between layers for up to 2 months. Thaw them in the fridge overnight.

These are usually served chilled or at room temperature rather than reheated. If you want to take the chill off, leave a bar at room temperature for 15 to 20 minutes, or microwave it for 5 to 10 seconds; any powdered sugar on top will dissolve.

FAQ

Can you use bottled lemon juice instead of fresh?

Yes, but fresh lemon juice and fresh zest give you a brighter flavor. If you use bottled juice, still use fresh zest for better aroma.

Should the topping use baking soda or baking powder?

The ingredient list and instructions conflict, so decide before you start and measure it once. Baking powder is the more typical choice in a lemon bar topping because it gives light lift without relying heavily on the lemon juice for activation.

Why does the topping go onto the hot base?

Adding the topping while the base is still hot helps the layers adhere and finish baking as one solid bar. It also reduces the chance of the crust softening before the topping sets.

Can you make these gluten-free?

Yes. Replace the all-purpose flour in both layers with a 1:1 gluten-free baking blend, and expect a slightly more delicate crust and a softer set in the topping.