Definition of «unbuttered side»

The phrase "unbuttered side" refers to a piece of toast or bread that doesn't have any butter or spread on it.

Layer arugula, peach slices and brie on unbuttered side of one slice of bread; top with remaining bread, butter side up. (naturesownbread.com)
On unbuttered side of 2 slices of bread layer half of brie, half of cranberry sauce, 2 slices of turkey and a few avocado slices. (foodiecrush.com)
On the unbuttered sides, spread goat cheese mixture (all slices). (mysuburbankitchen.com)
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