Always make cake mix better Top 5 Hacks for Cake Mix Use 1 some or all at once 1 Milk instead of water the same amount of milk as you would water milk adds fat which contributes to more flavor 2 Melted Butter instead of oil or butter oil mix instead of all oil butter adds flavor while oil contributes to moisture If the box calls for 12 c oil add 14 c oil and 14 c melted butter or 12 c melted butter 3 Add an extra egg than the instructions call for the addition helps with richness and moisture 4