01 -
Preheat oven to 180°C (350°F). Line an 8-inch cast iron skillet with parchment paper and grease with butter.
02 -
In a medium bowl, whisk together flour, ground cardamom, baking powder, and kosher salt until well combined.
03 -
In a large bowl, beat eggs until foamy. Whisk in granulated sugar and vanilla extract until well incorporated. Add buttermilk and mix until smooth.
04 -
Gradually add half of the flour mixture to the wet ingredients, stirring until just combined. Gently fold in half of the melted butter. Repeat with remaining flour mixture and melted butter, taking care not to overmix.
05 -
Pour batter into the prepared skillet. Evenly distribute the sliced strawberries and rhubarb on top of the batter.
06 -
Bake for 35-45 minutes, or until the cake is golden brown and a toothpick inserted into the center comes out clean. Transfer the skillet to a cooling rack and let cool for about 5 minutes. Serve warm or at room temperature, dusted with confectioners sugar.