Toaster Oven Lemon Bars
These zesty toaster oven lemon bars are the perfect balance of sweet and tart, with a buttery crust and a creamy lemon filling.
Why This Works in a Toaster Oven
This recipe is designed for a toaster oven, ensuring that the crust bakes evenly and the lemon filling sets perfectly without over-browning.
Toaster Oven Setup
- Temperature: 350°F (175°C)
- Setting: Bake
- Convection: No
- Rack Position: Middle
- Pan Size: 9 x 6 in (23 x 15 cm)
- Batch Size: 1 pan
- Cook Time: 25–30 minutes
- Rotate Pan: Yes, halfway through
- Ready When: The edges are set and the center jiggles slightly.
💡 No convection setting? You're all set — this recipe uses the regular Bake setting, so any toaster oven can make it, with or without a convection button.
Ingredients
Crust
- 1 cup (120 g) all-purpose flour
- 1/4 cup (28 g) powdered sugar
- 1/2 cup (113 g) unsalted butter, chilled and cubed
Filling
- 3/4 cup (150 g) granulated sugar
- 2 tablespoons (15 g) all-purpose flour
- 3 large eggs
- 1/2 cup (120 ml) fresh lemon juice
- 1 tablespoon (6 g) lemon zest
Topping
- Powdered sugar, for dusting
Equipment
- Toaster oven
- 9 x 6 in (23 x 15 cm) baking pan
- Mixing bowls
- Whisk
- Parchment paper
- Cooling rack
- Measuring cups and spoons
Instructions
- Preheat your toaster oven to 350°F with the rack in the middle position.
- Line a 9 x 6 in (23 x 15 cm) baking pan with parchment paper, leaving an overhang for easy removal.
- In a mixing bowl, combine 1 cup (120 g) of flour and 1/4 cup (28 g) of powdered sugar. Cut in 1/2 cup (113 g) of chilled butter until the mixture resembles coarse crumbs.
- Press the crust mixture evenly into the prepared pan. Bake for 15 minutes or until lightly golden.
- While the crust bakes, whisk together 3/4 cup (150 g) of sugar and 2 tablespoons (15 g) of flour in a separate bowl. Add 3 eggs, 1/2 cup (120 ml) of lemon juice, and 1 tablespoon (6 g) of lemon zest. Mix until smooth.
- Pour the lemon filling over the warm crust. Bake for 25–30 minutes, rotating the pan halfway through, until the edges are set and the center jiggles slightly.
- Allow the bars to cool in the pan on a cooling rack. Once cool, lift them out using the parchment overhang.
- Dust with powdered sugar before slicing into bars.
- Savor every bite of these tangy, sweet treats!
How to Know It's Ready
The edges are set and the center jiggles slightly.
Troubleshooting
- If the crust is too crumbly, ensure the butter is properly chilled before mixing.
- For a non-browning top, avoid using convection or cover the bars loosely with foil if they brown too quickly.
- If the filling is too runny, bake a few minutes longer until slightly set.
- To prevent sticking, ensure parchment paper lines the pan completely.
Storage and Reheating
Store leftover lemon bars in an airtight container in the refrigerator for up to 5 days. Enjoy cold or at room temperature. Reheat briefly in the toaster oven if desired.
Variations
- Add a teaspoon of vanilla extract to the filling for added depth.
- Use lime juice and zest for a lime bar variation.
- Sprinkle toasted coconut on top for a tropical twist.
- Add a layer of raspberry jam between the crust and filling for a fruity surprise.
FAQ
Can I use bottled lemon juice?
Fresh lemon juice is recommended for the best flavor, but bottled can be used in a pinch.
How do I prevent the crust from becoming soggy?
Ensure the crust is fully baked and slightly golden before adding the filling.
Can I double this recipe?
Yes, but use a larger toaster oven and adjust the pan size accordingly.
What is the best way to cut lemon bars?
Use a sharp knife, wiped clean between cuts, for neat slices.