Someone who is "granola" tends to enjoy the outdoors, all while staying inside in their nice suburban middle-class white neighborhood. They are usually seen wearing Chacos, Patagonia t-shirts, and Columbia PFG shorts, along with a North Face backpack, a Camelbak water bottle (attached with a carabiner,) and even a Life is Good hat and Kavu keychain. They claim to enjoy hiking and other outdoor activities while rolling up in their off-road vehicle that they would never dare get a speck of dirt on. They dream about living in the mountains and taking amazing roadtrips but never do. They care about nature and want to "save the trees" and recycle as much as possible. Those who have gone granola actually listen to pretty good music, like folk and alternative and heavily enjoy Christian music if they are religious (another reason they enjoy the outdoors - to get "closer to God"). In short, granola people are almost like modern-day transcendentalists and slight hippies, just without the drugs and psychedelic music.
Jack: Did you see Will rolling up in his shiny, clean Jeep Liberty with a kayak on top? He stepped out wearing a Patagonia t-shirt and $100 Chacos! He must have gone granola.