Preheat the oven to 350 degrees. Place cupcake liners into 12 cups of a standard sized muffin/cupcake tin.
In a large bowl, combine the cake mix, diet soda, and egg whites and beat with an electric mixer until smooth. Divide the mixture evenly into the prepared liners in the muffin tin. Bake according to the instructions on the cake box (I baked for 20 minutes) and remove from oven to cool for 20 minutes. Use a fork or a chopstick to poke holes all over the tops of the cupcakes (I poked each cupcake four times with a fork).
While the cupcakes are cooling, place the Jell-O mix into a mixing bowl and add the cup of boiling water. Whisk together until the Jell-O powder is dissolved. Spoon the Jell-O liquid over the tops of the cupcakes and refrigerate for at least 30 minutes.
Top each cupcake with two tablespoons of cool whip and half a strawberry before serving.
Notes
To view your current WW Points for this recipe and track it in the WW app or site, click here!WW Points per cupcake: 4 (Points calculated using the recipe builder on weightwatchers.com)Nutrition Information per cupcake: 93 calories, 18 g carbs, 9 g sugars, 2 g fat, 1 g saturated fat, 1 g protein, 1 g fiber, 161 mg sodium (from myfitnesspal.com)Weight Watchers Points Plus: 2 per cupcake (PP calculated using a Weight Watchers PointsPlus calculator and the nutrition info below)