For once in your life, itís time to color inside the lines. Provided you want a month of free Whataburger or a cash prize, that is.

Capitalizing on the adult coloring craze that has swept America lately (and in honor of National Hamburger Month), the Texas burger bellwether is holding a coloring contest in May, according to Nationís Restaurant News. The prettiest of the pre-drawn pictures will win Whataburger sandwiches for a year. One lucky grand prize winner will receive $2,500.

Courtesy of Whataburger

To submit your beautifully colored burger, send a picture to Whataburger on Facebook, Twitter or Instagram with the hashtag #TheArtOfBurgers. Winners will also be pictured on the chainís social media accounts.

Download more coloring page options and read all that beefy fine print at