Place a rack in the center of the oven and preheat the oven to 350 F degrees.
Lightly mist an 8-inch square metal cake pan with nonstick cooking spray.
In a medium size bowl mix together the dry cake mix, pudding mix, water, oil, yogurt, egg and vanilla until smooth and well blended, about 1 minute.
Scrape the batter into the prepared pan and spread it out evenly.
Sprinkle the chocolate chips evenly over the top of the cake.
Bake in the preheated oven until the top springs back when lightly pressed with your finger, 30 to 35 minutes.
Remove the cake from the oven and place it on a wire rack to cool completely.
Store the cake, covered with plastic wrap for up to 3 days at room temperature or for up to one week in the refrigerator.
Notes
Serving size: 1 slice (1/12th recipe)WW Points:Check the WW Points for this recipe and track it in the WW app. (You must be logged into WW on a smartphone or tablet.Old WW Points: 4 PointsPlusNutritional Estimates Per Serving (1/12th): 150 calories, 7.4 g fat, 20.7 g carbs, 0.8 g fiber, 2.3 g protein and 4 Weight Watchers PointsPlus Value (PPV)