Olive Garden is still a powerhouse in the casual dining sphere, but it's no longer the top dog. Another popular chain has taken that coveted spot.

Olive Garden is by no means doing badly—recent promotions such as the return of the never-ending pasta bowls and the recent Buy One, Take One deal have lured back customers who may have found rising prices simply not worth the bother of going out to eat.

Casual diners are all about the rolls and honey butter these days. LOUISVILLE, Ky. — Texas Roadhouse has officially become the largest casual-dining restaurant chain in the United States, surpassing longtime leader Olive Garden.