Spray large, nonstick skillet with vegetable oil spray. Set skillet over medium heat and lay bologna slices in pan, as many as will fit in one layer. Let bologna fry until it cups. Transfer cups to serving plate and fry remaining bologna in same fashion.

To make Potato-Vegetable Filling: In small, microwave-safe bowl, stir together vegetables and potatoes; microwave until hot.

To make Apple Salad Filling: In small bowl, stir apple, celery, raisins, mayonnaise and yogurt.

Spoon desired filling into each cup. For cups with Potato-Vegetable Filling, top with grated cheese.