3 raspberry filling buttercream 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, softened (i like imperial brand), sugar, eggs, cake flour, baking powder, salt, milk, vanilla extract or 1 tsp vanilla and 1 tsp almond extract, seedless raspberry preserves, butter, softened (i like imperial brand), fresh lemon rind, lemon juice, powdered sugar