General Mills is benefiting from the "astonishing" development of the middle class in emerging markets, which is creating jobs in the U.S., General Mills CEO Ken Powell told CNBC's "Street Signs" on Thursday.

"People get rising incomes, they move into that middle class, the first thing you do with that little extra money is you improve your diet," the executive said. "So it's a tremendous opportunity for companies like General Mills to get incremental growth."