Light & Luscious WW Lemon Bars

When I’m craving something bright, tangy, and sweet—but not heavy—these WW Low-Fat Lemon Bars are my go-to dessert. I first discovered them in the Weight Watchers New Complete Cookbook (affiliate link) and immediately fell in love.

They’re everything a lemon bar should be: a tender, buttery crust topped with a tart, silky lemon layer that practically melts in your mouth. Nobody will ever guess they’re lightened up!

I often bake a double batch in a 9×13-inch pan to take to potlucks or parties, and they disappear fast. Rod devoured two before I could even pack them up!

Why I Love This Recipe

• Tart, fresh flavor — real lemon juice and zest make these taste bakery-fresh.
• Light and low fat — all the flavor of classic lemon bars with less butter and sugar.
• Crowd-pleasing — a party favorite that even non-WW guests love.
• Make-ahead friendly — they chill beautifully and slice cleanly when cold.
• Perfect for spring and summer — bright, citrusy, and refreshing!

How Many Calories and WW Points in these Lemon Bars?

According to my calculations, each serving has:

• Calories: 113
• WW Points: 6
  To see your WW Points for this recipe, track it in the WW App!
  (You must be logged into WW on a smartphone or tablet.)
• Old Points: 3 PointsPlus

Ingredients and Substitutions

• All-purpose flour, divided – forms the base and helps thicken the filling. You can use white whole wheat flour for extra fiber.
• Cornmeal – adds subtle texture and a golden crust.
• Baking powder – helps the crust rise slightly and stay light.
• Salt – enhances all the flavors.
• Eggs and egg white – give the filling structure without extra fat.
• Water – keeps the crust tender.
• Butter, softened – use light butter or a blend for fewer calories.
• Granulated sugar, divided – sweetens both crust and filling.
• Lemon zest – don’t skip it! Adds intense lemon aroma and flavor.
• Fresh lemon juice – about 4 lemons. Bottled juice just doesn’t compare.
• Confectioners’ sugar – for a pretty finishing dusting.

How To Make WW Lightened Up Lemon Bars

Step 1: Gather and Prep your ingredients.

Step 2: Prepare your pan. Position an oven rack in the center of the oven. Heat the oven to 350F degrees. Line an 8-inch square baking pan with foil, allowing the foil to extend over the rim by 2 inches. Spray the foil with non-stick spray.

Step 3: Make the crust:

• In a small bowl (affiliate link), whisk together 2/3 cup of the flour, cornmeal, baking powder and salt until well blended; then set it aside.
• In another small bowl (affiliate link), beat together the eggs and egg white.
• Take 1 tablespoon of the egg mixture and place it in a cup, along with the teaspoon of water, and stir it together. Set aside both egg mixtures.
• With an electric mixer (affiliate link) on low speed, beat the butter in a medium bowl until creamy. Add 1/4 cup of the granulated sugar and beat until blended. Beat in the egg-water mixture. Add the flour mixture and beat until blended. (The dough will be crumbly.)
• Press the dough mixture evenly onto the bottom and 1/4-inch up the sides of the foil-lined pan. Bake until golden brown, 20 to 25 minutes.

Step 4: Make the filling while the crust bakes:

• In a medium bowl, whisk together the remaining 1/3 cup flour and 3/4 cup granulated sugar. Whisk in the remaining egg mixture until blended. Add the lemon zest and lemon juice and whisk until well blended.
• Remove the crust from the oven and place on a rack. Reduce the oven temperature to 300F degrees. Pour the lemon mixture over the hot crust. Bake until the filling is set, 20 to 25 minutes.
• Remove from the oven and place on a wire rack to cool. Refrigerate until cold, at least 1 hour and up to 8 hours.
• When ready to serve, sprinkle the chilled bars with confectioners’ sugar. Use the foil to lift the slab of bars from the pan. Cut into 16 even squares.

These WW Low Fat Lemon Bars would be perfect whenever you want a special light and luscious dessert.

Serving Suggestions

• Serve chilled for a firm, refreshing treat.
• Sprinkle with powdered sugar or a few fresh raspberries.
• For a fancier dessert, top with a dollop of light whipped cream.
• Pair with coffee or tea for an elegant afternoon pick-me-up.

Storage and Leftovers

• Refrigerator: Store in an airtight container for up to 5 days.
• Freezer: Freeze individually wrapped squares for up to 2 months. Thaw overnight in the fridge before serving.
• Tip: Dust with confectioners’ sugar after thawing or serving for the best look.

If you like these WW Low-Fat Lemon Bars, be sure to check out my other easy, healthy Weight Watchers friendly recipes: Lemon Coconut Tea Cake, Low Fat Lemon Blueberry Oatmeal Muffins, Lightened Up Lemon Cream Cheesecake Bars, Savory Lemon Rosemary Blueberry Bread, No Bake Lemon Blueberry Cheesecake, Pink Lemonade Bundt Cake, Slow Cooker Lemon Cake and Slow Cooker Lemon Poppyseed Cake

If you’ve made this Low-Fat Lemon Bars, please give the recipe a star rating below and leave a comment letting me know how you liked it. And stay in touch on Pinterest, Facebook, Instagram and Twitter for the latest updates.

Source: Weight Watchers New Complete Cookbook, Fifth Edition (affiliate link)

For a quicker, easier option, check out this healthy lightened up 5-ingredient lemon bars video from Mind Over Munch:

More Weight Watchers Friendly Lemon Recipes

If you like these WW Low Fat Lemon Bars you’ll love:

• Lemon Blueberry Bars
  A soft, fruity bar with just the right balance of sweet and tart.
• No Bake Lemon Strawberry Pie
  Cool, creamy, and bursting with flavor—no oven required!
• WW Lemon Blueberry Cheesecake Yogurt Bark
  A high-protein frozen treat that satisfies any cheesecake craving.
• Lightened Up Lemon Cream Cheesecake Bars
  Creamy, dreamy lemon cheesecake flavor in a lighter bar form that uses a cake mix.
• Creamy Lemon Triple Berry Fool
  A quick and elegant layered dessert of creamy yogurt and berries.