Belle enjoyed cooking barefoot.
She first discovered this in the Dark Castle when the shoes she'd arrived in were deemed to impractical to wear while moving around in a kitchen. Of course, the gold silk ballgown she was wearing was also impractical, but made much more manageable once she kicked off the three inch heeled shoes she had on.
When she'd gotten her blue dress and her new silver shoes, Belle found she'd enjoyed flitting around on the cold stones barefoot as she boiled, baked, and (yes) burned. Her shoes would be placed on the fireplace hearth to be nice and warm when she was done cooking and headed to whatever other task awaited her.
The proclivity to cook barefoot returned with her memories, Rumpelstiltskin realizes as he notes the comfortable silk slippers he'd bought for her discarded by the patio door. Her electric purple painted toes support his wife as she reaches for the mixing bowls stored on the highest shelf.