In a large bowl, combine olive oil, orange juice, sugar, crushed walnuts, honey, cognac (if using), and orange zest.
In another bowl, combine the flour, baking powder, baking soda, salt, cloves, and cinnamon.
Combine the wet and dry ingredients and knead with your hands for a few minutes to incorporate the oil into the flour.
Working with one tablespoon of dough at a time, roll into oval shapes, flatten slightly and place onto the prepared baking sheets 2 inches (5cm) apart.
Press the tops to the cookies with a fork to make a few indentations.
Bake for 10-15 minutes, until the bottoms are golden brown. Let cool completely before proceeding.