DecoPac released a line of Muppet cake decorations, "The Muppets Divine Desserts", in 2011, as a tie in to the release of The Muppets.
"Together Again" edible cake topper image
"It's Time to Put on a Show" edible cake topper, with PhotoCake personalization
"Together Again" edible cupcake topper
Kermit the Frog cupcake topper
Miss Piggy cupcake topper