Use the Two-Thirds Rule to Perfectly Fill Any Size Baking Dish
Baking is a complex art. One wrong move can ruin your entire pie, cake, or batch of cupcakes. If you do not have a baking dish of the size required in your recipe, use the two-thirds rule as a guide when changing sizes.
This simple rule of thumb comes through Epicurious. They write:
Typically, you only need to fill in half or two-thirds of the cake pan so that the dough does not flood the edges. (Unless, of course, the recipe says otherwise.) For heavier doughs like banana bread and pumpkin bread, two-thirds will do, Medrich says. But lighter, softer cakes will lift more, so only half-fill these forms.
Two-thirds is a general rule of thumb, but when in doubt, they actually recommend being wrong about underfilling: stick to half full if you’re trying a recipe for the first time, using a different sized saucepan, or the recipe doesn’t tell you how much to pour. To learn more about baking, go to the full publication at the link below.
6 rules for replacing baking dishes | Epic
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