This is hands-down one of the easiest, simplest yet yummiest cookie recipes you can whip-up in less than 30 min with minimal ingredients, as long as you have a regular-sized jar of Nutella at home.
You will need to blend 1 cup of Nutella, 1/2 cup of sugar, 1 cup of flour and one large egg. The mixture should be dry, but if things get a little too dry add a teaspoon of water. Form the cookie dough into small balls on a baking sheet and bake on 280 degrees for 8-10 minutes. You should be able to make around 18 cookies. Try not to eat them all at once