Greek Style Baking

Greek Style Cinnamon Walnut Christmas Cookies.
Ingredients.
4 cups (480 gr.) of all-purpose flour.
1 cup of sugar (200 gr.).
2 sticks (227gr.) of unsalted butter.
1 container of 2% Greek yogurt.
2 tablespoons of baking powder.
1/3 cup of olive oil.
1 cup (200 gr.) of finely chopped walnuts.
1 tablespoon of cinnamon.
1 teaspoon of ground cloves.
1 teaspoon of vanilla extract.
1 egg.