Pre-heat the oven to 350 degrees. Line a 9 inch round cake pan with parchment paper and give it a liberal spray with cooking spray. In a large mixing bowl, whisk together the sugar, flour, baking powder, cardamom and salt. Add in the Greek yogurt and canola oil and thoroughly stir them in. Pour in the eggs, honey and vanilla extract and stir them in next. Switch to a rubber spatula and gently fold in the pistachios.

Scrape the batter into the prepared cake pan and smooth it out to be even with the rubber spatula. Bake it for an hour, until it is golden on the outside and a toothpick inserted into the center comes out clean. Take it out and let it cool for about 20 minutes, then carefully turn it out onto a cake plate. Remove the parchment paper from the bottom.

Allow it to cool for another 20 minutes, then dust the top liberally with powdered sugar. Slice and serve with some great tea and enjoy!