A picture of the "dessert," aptly named the Cadbury Creme Egg SubMelt, was shared on Instagram by food influencer Snackolator. It showed a Subway sandwich roll filled with melted Cadbury Creme Eggs.

There is no clearer sign that Easter — and thus, spring — is approaching than the appearance of Cadbury Creme Eggs on candy shelves across the country. With its ovoid chocolate shell and sweet ...