Swedish chocolate cake, known as kladdkaka, is a rich, gooey chocolate cake that's a beloved baked dessert in Sweden. The name kladdkaka translates to "sticky cake," which perfectly describes its soft, slightly underbaked center.
Preheat the oven to 350 degrees. Line (with parchment paper), grease and flour a 7-inch cake tin (or in my case a 8x4-inch loaf pan).
Melt the butter in a medium saucepan. Remove from the heat and stir in the rest of the ingredients. Pour the mixture into the prepared cake tin and bake for 20-30 minutes - it should be set around the edges but still gooey in the middle.
Let the cake cool in its tin for about 20 minutes, then run a blunt knife around the inside edge of the tin to loosen it. Turn out onto a wire rack, dust with icing sugar and serve warm.