Preheat oven to 350°F.
In a large bowl, sift together flour, baking soda, cardamom, cinnamon and salt. Set aside.
In a stand mixer with the paddle attachment, cream together butter and granulated and light brown sugar. Add eggs one at a time and mix well, scraping the bowl between and after each addition. Add vanilla extract, banana mash, and Greek yogurt, mixing well after each addition.
Gradually add flour to the wet ingredients and mix on low speed until just combined. Don’t overmix.
Fold in chocolate chips, if using.
Pour batter evenly a well-greased 9-inch loaf pan and bake for 50 to 55 minutes or until a toothpick inserted into the center of the loaf comes out clean.
Let cool in pan on a wire rack before turning out.