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How to bake in glass jars

Updated February 21, 2017

When you bake in glass canning jars, those home-baked treats are available even on days when you are too tired or too busy to create something in the kitchen. Sealing the cakes in the glass jars also allows you to mail them to friends and family. Tuck a jar cake into a package for a deployed service member to send a taste of home.

Wash and sterilise the jars and rings in the hottest setting on the dishwasher. If you do not have a dishwasher, wash them thoroughly and then submerge them in boiling water for 10 minutes.

Place the lids in a saucepan and add enough water to cover them. Bring the water to a slow simmer.

Grease the inside of the jars. Keep oil off the jar rims or the lids will not seal properly.

Add 237 ml (1 cup) of batter to each jar. Do not overfill the jars, or the cake will rise too high for proper sealing.

Place the cake pan in the oven. Set the jars in the pan to steady them on the oven rack.

Bake the cake according to the recipe or package directions. Check for doneness by inserting a toothpick into the centre of the cake. If cooking is complete, the pick will come out of the cake clean.

Remove one jar at a time from the oven. Place a lid on the top of the jar. You may have to push the top of the cake slightly. Add a ring and tighten it to seal the jar. Repeat until all jars are sealed.

Tip

Store the jars on a shelf in the same way that you would other home-preserved food. If you are unsure of the sealing of the jars, store the cooled cakes-in-a-jar in the freezer.

Warning

It is important that the cake cook thoroughly. Follow the recipe's regular baking temperatures to be sure that the heat kills bacteria.

Things You'll Need

  • Wide-mouthed 568 ml (1 pint) canning jars
  • Lids and rings for jars
  • Oil
  • Cake batter
  • Cake pan
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About the Author

Pamela Martin has been writing since 1979. She has written newsletter articles and curricula-related materials. She also writes about teaching and crafts. Martin was an American Society of Newspaper Editors High School Journalism Fellow. She holds a Bachelor of Arts in Teaching in elementary education from Sam Houston State University and a Master of Arts in curriculum/instruction from the University of Missouri.