This soda cake hack is great for when you’re extra lazy or low on ingredients. This Coke Soda Cake Recipe doesn’t need any eggs, or oil, or milk. Mix gently but thoroughly and tip into a buttered, loose based cake tin (24cm/9½ in diameter). Or skill. You just need a boxed cake mix and a can of soda pop. If you're out of flour, eggs, butter, or oil, you can still make cake using a box of cake mix and just one other pantry staple. In this post, I share four ways to make easy 2 ingredient cake mix cake. You never know when that sweet tooth will strike!