Cut three 25x3-in. strips of heavy-duty foil; crisscross so they resemble spokes of a wheel. Place strips on the bottom and up the sides of a round 5-qt. slow cooker. Coat strips with cooking spray. , In a large bowl, combine the tomatoes, salsa, tomato paste and cumin. Stir in hominy and beans. Place 1 tortilla on the bottom of slow cooker. Top with a third of the hominy mixture and cheese. Repeat layers twice. Sprinkle with olives. Cover and cook on low for 3 to 3-1/2 hours or until heated through. , Using foil strips as handles, remove the lasagna to a platter. Let stand for 5 minutes before cutting into wedges.