The complete Full Slab of Ribs Dinner at Portillo’s is a big BBQ meal that includes a complete rack of delicious, slow-cooked baby back pig ribs that have been generously coated with their famous smoky-sweet barbecue sauce. These ribs are juicy, tasty, and fall-off-the-bone tender because they were cooked low and slow. This dinner usually comes with classic sides like crispy crinkle-cut fries and creamy coleslaw or baked beans. For real BBQ fans, this is a full and fulfilling meal.