Rum Raisin Cake Using Cake Mix. Add the dry ingredients in three additions alternately with the rum in two additions, mixing until incorporated after each addition; Put the first five ingredients into a small pan.
Spoon batter into prepared pan. Preheat the oven to 325°f. While the cake is baking, make the rum butter syrup.
Mix the batter for 15 seconds.
Add eggs, 1 at a time, beating after each addition;. Place raisins and rum in a bowl and set aside for 30 minutes to soften. In small bowl mix milk and baking powder. Add the dry ingredients in three additions alternately with the rum in two additions, mixing until incorporated after each addition;