Preheat the oven to 375. Place cupcake liners into 12 cups of a standard sized muffin/cupcake tin and place a chocolate wafer in each liner (don’t worry if they don’t fit perfectly, just try to make them lay flat).
In a large bowl, combine the cream cheese, yogurt, 1/3 cup of sugar, cocoa powder and egg and mix together using an electric mixer until smooth and well combined. Spoon the mixture evenly on top of the wafers into the prepared liners and spread flat with a spatula or the back or a spoon..
Bake for 15-16 minutes and remove from oven to cool. While the cheesecake cups are cooking, place the butter in a small saucepan and bring over medium heat. When butter is melted, add the raspberries and stir to mix with the butter. Cook for 3-5 minutes, stirring occasionally, until raspberries have liquefied and are bubbling. In a small dish, stir together the cornstarch and hot water until smooth and add to the raspberries. Add the remaining tablespoon of sugar and stir to combine. Cover the saucepan and reduce the heat to low. Simmer for 2-3 minutes until raspberry mixture has thickened.
Once the cheesecake cups have cooled to room temperature, spoon the raspberry sauce onto the center of each cup, leaving a little room around the edges. Transfer the cheesecake cups to the refrigerator and chill for at least one hour. Serve cold.
Optional: I added a fresh raspberry on top of each of my cheesecake cups just for cuteness in the photos. Feel free to do the same for yours!