Ingredients
Equipment
Notes
- Use a metal pan, not glass. Metal conducts heat evenly and helps the lemon filling set without overbaking the edges. Glass pans tend to leave centers soft and underdone.
- Press the crust firmly. A loose crust crumbles when sliced. Use the bottom of a measuring cup to compact it evenly, especially in the corners.
- Bake the crust until lightly golden. A pale crust turns soggy once the filling is added. You want just a hint of color before pouring on the lemon layer.
- Fresh lemon juice is non-negotiable. Bottled juice flattens the flavor and makes the bars taste dull. Fresh juice gives that bright, clean citrus punch people expect.
- Whisk gently, not aggressively. Overmixing adds air to the filling, which can cause cracks and a spongy texture instead of a smooth custard.
- Go easy on the raspberry swirl. A few gentle passes with a knife are enough. Over-swirling blends the layers and muddies both color and flavor.
- Pull the bars while the center still jiggles slightly. They continue to set as they cool. If the center is fully firm in the oven, they’ll be dry once chilled.
- Chill completely before slicing. Cold bars slice cleanly and hold their shape. Warm lemon bars fall apart and make you question your life choices.
- Add powdered sugar after chilling. If you dust too early, it melts into the surface and disappears instead of giving that bakery-style finish.