Hamburger restaurant chain Jack in the Box said Monday it would buy Del Taco Restaurants for $455.3 million as it looks to expand its customer base and take advantage of the Mexican food chain’s drive-thru foothold.

Under the deal, Jack in the Box will pay $12.51 in cash for each Del Taco share, which is a premium of over 66% to its closing price on Friday. The total value of the deal, including debt, is about $575 million. Jack in the Box said it expects the deal to immediately add to its earnings.