If you haven’t yet heard of fast-casual dining, please crawl out from under your rock. Sit-down and fast-food dining are losing ground as fast-casual gains momentum in a race to feed Americans the best quality food at the most reasonable prices. Rising in popularity during the 2008 recession, when casual dining sales plummeted, the fast-casual concept was created to bridge the gap between fast food chains (where cheaper pricing didn’t entice customers who coveted better quality), and casual dining (where better quality didn’t entice customers who coveted lower costs). Places like Chipotle, whose goal upon opening in 1993 was to “redefine the fast food experience,” have succeeded in their endeavor, and with the recession lingering on, have also gained a firmer foothold in the market.

And if the lingering recession didn’t seal the deal for these fast-casual operations, check this out: in 2008, the biggest rise in sales was from the 18-34 age demographic. That same group now makes up the 24-40 demographic, and their continued patronage of fast-casual restaurants persist in driving the market segment.

This top dining trend for 2015 is in it for the long haul, too, and other chains eager to mimic Chipotle’s style continue to open up nationwide—think Five Guys and Panera, Panda Express and Boston Market. Traditional sit-down establishments are opening their dining rooms for fast-casual lunches while their dinner formats remain unchanged, as demonstrated in Romano’s Macaroni Grill and their new Romano’s Kitchen Counter, where you can order from a special lunch menu customized to be speedy. You pay for your meal, take a seat, and your hot, fresh food will be delivered to you in under 7 minutes. Even pizza has jumped on board, with MOD joining the realm of fast, quality foods on the west coast and Uncle Maddio’s spreading across the east. Individual pizzas, made to order with the freshest ingredients and minimal waiting time, are picking up momentum among even the most environmentally conscientious of America’s time-starved crowds.

Many times a trend is just a passing fad that withers and dies almost as quickly as it caught hold. But this top trend of 2015 doesn’t seem to be at risk for slowing its pace. You can expect that sit-down markets will continue to dwindle as fast-casual establishments stay the course.