Possible Clues:

• Longtime Jack Benny sponsor
• Product once pitched by Bill Cosby
• Dessert in a mold
• Molded fare
• Dessert there's 'always room for'
• Pudding Pops makers, originally
• Shaky mold
• Jiggly comestible
• Translucent dessert
• It may still be moving when you eat it