Nutella's empire is making a multibillion-dollar play for America's snack market

Business Insider Ferrero has spent the last decade buying up some of America's biggest brands.

Best known for Nutella, Ferrero has grown its US revenue from $600 million in 2017 to $3 billion.

Now a $3.1 billion cereal bet could determine how far Ferrero can go.

Baby Ruth, Butterfinger, Froot Loops, Frosted Flakes.

They are all now owned by the same Italian company .

Best known for Nutella and Ferrero Rocher chocolates , Ferrero has spent much of the past decade buying established American food brands and investing in US manufacturing.

The privately held company now has more than 50 brands in its US portfolio, spanning chocolate, candy, mints, cookies, and breakfast cereal.

The expansion has transformed Ferrero's US business.

The company says the US accounts for about 15% of its global revenue, up from about 4% a decade ago.

Since 2017, its annual US revenue has grown from roughly $600 million to about $3 billion.

One of Ferrero's famous products is its Ferrero Rocher.

Business Insider Ferrero is still smaller than some of America's biggest snack companies, like Mars and Mondelez, but its acquisition spree has put a growing collection of familiar brands under the ownership of a company once best known in the US for imported European sweets.

We visited Ferrero factories across the US to see how far its American ambitions go.

Ferrero has spent billions buying American brands Business Insider Deputy Executive Producer Havovi Cooper, visiting one of Ferrero's manufacturing facilities in the US.