- Heat oven to 190C/375F. Grease and flour a 8-inch bunt pan. Whisk together flour, baking powder and salt. Cream together sugar, shortening and egg. Mix in sourdough starter.
- Alternatively add in milk and flour mixture. Mix well. Spread half of the batter in prepared pan. Top with half of preserved cranberries, then half of the streusel mixture. Repeat with the remaining. Bake for 25 to 30 minutes or until done.