1. Crank your oven to 350°F and grease a 9×9-inch baking pan thoroughly with butter or baking spray. Get those corners really well, or line with parchment paper for foolproof removal.
2. Make the crust: In a mixing bowl, combine 1 cup flour, 1/2 cup powdered sugar, and softened butter. Mix with a fork or your hands until the mixture is crumbly and holds together when squeezed. It should look like coarse sand.
3. Press this mixture firmly and evenly into the bottom of your prepared pan. Use the bottom of a measuring cup to pack it down uniformly so it’s compact and even.
4. Bake the crust for 20 minutes until it’s set and just barely starting to turn golden at the edges. Don’t overbake or it’ll be too hard and dark.
5. While the crust bakes, make your filling: In a bowl, whisk together eggs and granulated sugar until well combined and slightly lighter in color—about 1 minute of vigorous whisking.
6. Add 2 tablespoons flour, fresh lemon juice, and lemon zest to the egg mixture. Whisk thoroughly for about another minute until completely smooth with no flour lumps. The mixture should be pale yellow and smell amazing.
7. When the crust comes out of the oven, immediately pour the lemon filling over the hot crust. Don’t let it cool first—the hot crust helps everything bind together.
8. Return the pan to the oven and bake for an additional 20 minutes until the filling is set. It shouldn’t jiggle in the center when you gently shake the pan, though it might still look slightly soft. The edges may be slightly puffed.
9. Remove from the oven and let cool completely in the pan on a wire rack. This takes at least 2 hours at room temperature, or refrigerate for about 1 hour once slightly cooled.
10. Once completely cool, dust the top generously with powdered sugar through a fine-mesh sieve for that classic bakery look.
11. Cut into 16 squares with a sharp knife, wiping the blade clean between cuts for the prettiest bars. Serve at room temperature or chilled.

Nutrition Information (Per Bar):

• Calories: 140
• Carbohydrates: 22g
• Protein: 2g
• Fat: 6g
• Fiber: 0.5g
• Sodium: 45mg
• Vitamin C: 8% DV

These lemon bars provide a burst of vitamin C from fresh lemons while the eggs add quality protein. Enjoy as a special treat!

Notes:

• Use fresh lemon juice and zest for the best flavor—bottled juice doesn’t taste the same.
• Zest lemons before juicing them—it’s nearly impossible to zest a juiced lemon.
• Room temperature butter and eggs work better for smooth mixing.
• Pour the filling onto the hot crust, not a cooled one, for proper adhesion.
• Don’t overbake the filling—it should be just set, not firm or rubbery.
• Let bars cool completely before cutting for clean slices.
• Dust with powdered sugar right before serving—it dissolves if done too early.

Storage Tips:

Store lemon bars covered in the refrigerator for up to 4 days. They actually taste better the next day after flavors meld. Don’t dust with powdered sugar until right before serving as it dissolves into the lemon layer over time. These freeze okay for up to 2 months wrapped tightly, though the texture changes slightly—best enjoyed fresh or refrigerated.

Serving Suggestions:

• Classic Style: Simply serve dusted with powdered sugar
• Tea Party: Cut into small squares for elegant afternoon tea service
• Garnished: Top each bar with a thin lemon slice or fresh berry
• Plated Dessert: Serve with a dollop of whipped cream and fresh mint

Mix It Up (Recipe Variations):

• Lime Bars: Replace lemon juice and zest with fresh lime for a tropical twist
• Meyer Lemon Bars: Use Meyer lemons for a sweeter, more aromatic version
• Lemon Blueberry Bars: Scatter 1/2 cup fresh blueberries over crust before adding filling
• Coconut Lemon Bars: Add 1/2 cup shredded coconut to the crust mixture

What Makes This Recipe Special:

These classic lemon bars use the traditional technique of baking the crust first to ensure it stays crisp and doesn’t get soggy from the wet filling. The method of pouring the custard onto a hot crust creates proper adhesion between layers while the small amount of flour in the filling helps it set to that perfect creamy texture without becoming rubbery. Fresh lemon juice and zest provide bright, authentic citrus flavor that bottled juice can’t replicate.