Freezing Cake Mix: You can extend the life of the dry cake mix in the freezer stored in a freezer-safe airtight container up to 6-12 months. To use, simply thaw overnight in the refrigerator.

Mix your cake in a jar batter. (Military.com) Follow the mixing instructions on the box. While you're doing this, turn your oven on to heat to 400 degrees. The box probably says "350 degrees." ...

On low speed, beat cake mix, pineapple with juice, milk, eggs, and butter until blended, 30 seconds; on medium, beat until fluffy, 2 minutes. Pour into pan.

Green sprinkles Directions: Preheat oven to 350 degrees F and grease two circular cake pans with nonstick cooking spray. In a medium bowl, mix the cake mix, eggs, canola oil and water.