Place a pizza peel, cutting board, or inverted baking sheet on top of the parchment and, using both hands, flip everything over.
When your oven is preheated, remove one of the proofing baskets from the fridge, uncover it, and place a piece of parchment paper over it. Place a pizza peel, cutting board, or inverted baking sheet on top of the parchment and, using both hands, flip everything over. Gently remove the basket; your dough should rest on the parchment.