Use a Duncan Hines cake mix and mix according to directions adding a small box of instant pudding and 1/4 cup of oil.
For a chocolate cake add chocolate fudge pudding. For a red velvet cake add cheesecake pudding, for a lemon cake add lemon pudding. For a carrot cake add pumpkin or butterscotch pudding.
For a fancy frosting brush gel coloring on sides of pastry bag. Fill with frosting and pipe it out.
Fillings are in the pie filling section or use pudding mixed with half and half and just half the amount of milk that it specifies on box.
Frosting
8 tblsp crisco
1 tblsp vanilla extract
4 cups conf sugar
8 tblsp milk or half and half
1/8 tsp salt
For chocolate add cocoa and pinch of salt
Taste it as you go. If too sweet add more crisco.
Use beater first, then whip to incorporate air.
Keep covered from air.
