This collection features a bright and vibrant copper finish, reminiscent of the season. These cast aluminum baking pans were designed with spring and summer entertaining in mind, but they will delight year-round. Pans provide fine details and superior baking performance. Oven safe to 400?? F. Lifetime Warranty. Like the conversational heart candies we all know and love, these little cakes are sure to inspire warm and tingly feelings.