Here’s the classic, super easy 🍋 3-Ingredient Weight Watchers Lemon Cake — bright, fluffy, and low in points!
🍰 3-Ingredient Weight Watchers Lemon Cake
Servings: 12
WW Points:
- 2–3 points per slice (depending on your plan and portion size)
🧁 Ingredients
- 1 box (15.25 oz) lemon cake mix (such as Betty Crocker or Pillsbury)
- 1 can (15 oz) diet lemon-lime soda (like Sprite Zero or Diet 7-Up)
- 3 large egg whites
(That’s it — no oil or butter!)
👩🍳 Instructions
- Preheat oven to 350°F (175°C).
- Lightly spray a 9×13-inch baking pan with nonstick cooking spray.
- In a large bowl, mix cake mix, diet soda, and egg whites until smooth.
- Pour batter into the prepared pan.
- Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean.
- Cool completely before slicing.
🍋 Optional Toppings (low point ideas)
- Dust with powdered sugar substitute (like Swerve)
- Add a drizzle of zero-sugar lemon glaze (mix powdered sweetener + lemon juice)
- Top with fat-free Cool Whip and a bit of lemon zest
💡 Tips
- You can use diet orange soda or diet ginger ale for a flavor twist.
- Store leftovers covered in the fridge for up to 4 days — it’s great chilled!
- For cupcakes, bake about 18–20 minutes and enjoy on the go.
Would you like me to give you a Strawberry or Pineapple version of this WW 3-ingredient cake next? Both are also under 3 points!

