Chef Brad Halsten's "Big Sky Burger" is Red Robin's Best of the Bash winner.

GREENWOOD VILLAGE, Colo. – The Big Sky Burger became the newest addition to Red Robin Gourmet Burgers Inc.'s premium burger line after winning Red Robin's Best of the Bash Contest grand prize. The Big Sky is the fifth burger to win the contest, joining a lineup of premium burgers that includes Smoke & Pepper Burger, The D.G.B., Black & Bleu Burger and Southern Charm Burger.

"For Red Robin's Best of the Bash Award entry, I wanted to kick things up a notch and use unique ingredients, like pairing Sriracha with a blackened patty," said Chef Brad Halsten. "I'm excited that Red Robin's version of my winning burger will be served at more than 500 locations across the country."

Halsten, owner of The Burger Dive in Billings, Mont., beat out nine other burgers made by skilled chefs from across the United States. The Big Sky features a half-pound Black Angus beef patty with blackened seasoning, topped with crispy bacon, an onion ring drizzled in Sriracha, creamy goat cheese crumbles, arugula and roasted garlic aioli served on a toasted ciabatta bun.

"We love working with chefs to create innovative burgers and know The Big Sky will be a welcome limited time addition to our expanding Finest premium burger line," said Denny Marie Post, senior vice president and chief marketing officer for Red Robin.

The Big Sky Burger is available now through Jan. 4.