Polish Pottery Apple Bakers are fun and easy to use: Just core an apple, place it inside, bathe with one tablespoon each butter and water, garnish with raisins, nuts, honey, maple syrup, sweet spices or anything festive. Preheat oven to 350 degrees F., then bake 20 to 40 minutes, depending on the size: the clay will take on the heat and cook from the inside out. The Polish Stoneware is also an attractive serving dish and will help keep your apple warmer longer. Our improved design bakers can now be stacked rim to rim, bottom to bottom for space saving convenience.