This is such a cool idea. Bake the cake in the canning jar and then you can store it. You can use box cake mix or make your own cake.
- Always use the wide mouth straight sided glass canning jars.
- Lightly coat the inside with vegetable oil or cooking spray.
- Fill the jars only about half way to give the cake room to rise.
- Keep the mouth clean to ensure a good seal.
- Be careful when removing the jars from the oven.
- Store in the fridge or the freezer for up to 6 months.