In a medium bowl, combine all the ingredients except the raspberries. Whisk and stir to well combine. Fold in the raspberries.
Spoon batter into a quart zip top bag, remove as much air as possible, and close. Snip one corner and pipe batter into doughnut pan, filling each almost full. Bake for 12 minutes, or until firm to the touch and a cake tester inserted into the middle comes out clean. Serve warm soon after baking.