Make the most of your oven’s heat by placing several firebricks inside as you bake. The firebricks will absorb the heat from the oven and once you’re done, continue to emanate heat long after your oven is off. Just prop your oven door open to allow the heat to escape. Of course, you’ll want to use extreme caution with this method if you have young children in the house.
Firebricks are more expensive than regular red brick, but cost under $5 in most locations. Not a bad expenditure for lowering your fuel and energy consumption.
Thanks to my friend and colleague Jennifer Margulis for sharing this idea!