3 surprise ingredient cake Recipes

cake, preferred brand cake mix, any flavor (i used vanilla), ingredients to prepare cake, according to directions, fresh or frozen raspberries (approx. 1 bag frozen, 2 pints fresh ), buttercream filling, marshmallow fluff, butter, softened and cut into 1-inch pieces, vanilla extract, powdered sugar plus more , if necessary, chocolate topping, chocolate chips, vegetable oil, you will also need, cupcake liners, pastry bag with round tip (or a ziplock bag and a wooden skewer)

butter, white sugar, eggs, cocoa powder, all-purpose flour, baking powder, baking soda, water, vanilla, sauerkraut (rinsed,drained & chopped )