Discover Why Our Food Truck Is a Lansing, MI Favorite FEEDING HUNGRY FRIENDS AND FAMILY SINCE 2005 If you're looking for authentic Mexican food in Haslett or Lansing, MI, add El Oasis to your list of favorites. Visit our Mexican restaurant-or one of our two food truck locations-whenever you're craving authentic tacos, burritos or nachos. We even offer delivery options for those nights you can't leave the house. We've got a delicious recipe for every craving. Enjoy authentic Mexican food right here in Michigan. Stop by our food truck today.