MINNEAPOLIS — Classic Trix Fruity Shapes cereal is returning to shelves this fall. General Mills, Inc. said it has received more than 20,000 requests in the past 18 months for the product, which debuted in 1991 and disappeared in 2006, when the cereal returned to its original round shape. Classic Trix Fruity Shapes feature raspberry red, lemon, orange, wild berry blue, grape purple and watermelon pieces.

The reintroduction follows last year’s relaunch of Classic Trix, featuring the brand’s iconic bright colors, after consumers complained about a new formulation with colors from natural sources.

“Trix cereal is beloved by our fans, and we heard loud and clear that they wanted to see the iconic shapes back in their bowls,” said Scott Baldwin, director of marketing for General Mills cereal. “When Trix launched in 1954, it was the first fruit-flavored cereal that was colorful and fun. We’re excited to continue that legacy, bringing an extra dose of joy to breakfast.”

Classic Trix Fruity Shapes is among numerous products, particularly in the cereal aisle, that have been reintroduced by consumer demand in recent years. Other examples include Post’s Oreo O’s, General Mills’ French Toast Crunch and Kellogg’s Smorz. Another product set to make a comeback from Kellogg Co. is a Pop-Tarts inspired cereal.