Preheat oven to 350°F. In a small mixing bowl, mix Nutella, flour and yogurt with a spoon until the dough comes together and is fully blended. Roll dough into a disc and (if using) press chocolate chips on top.
Place cookie on a baking sheet lined with silpat mat or parchment paper. Bake about 9 minutes. Let cookie cool for a few minutes and firm up before eating.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.